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UC232R and Flat Sequence Structures

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Within the while loop below, I am trying to ensure that my code is making a connection between the PC and the rig I am working with. I am updating 8 test rigs that turn and measure the torque applied to multi-turn valves. For each rig, two serial connections are sent to a PC so I have 16 different devices where 8 devices are one model and another 8 are a different model. My problem is that I need to distinguish which device is sending/receiving information based on both its rig and its model. The subVIs shown work, but I am experiencing an error within the flat sequence structure. The program will enter the while loop, pass a true, and the rig ID. Each rig has a corresponding torque sensor and stepper motor that is identified through it’s serial number (VISA communication). All of the subVIs within run independently, but when added to this sequence, the first frame (torque sensor search) is the only one to execute. There is an issue passing to the next frame and getting the next subVI to execute. The rig ID continues to be passed through (pink wire). Also, the first frame will execute when I first open and try to run this VI, but will not execute a second time. Is it possible the while loop is causing this error, or could it be a timing issue?

 

Device Conenction Loop.PNG


"Timeout expired before operation complete" occurs unpredictably after sending thousands of queries.

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I haven't run into this exact issue before, so hopefully someone has and may be able to suggest a solution. I have a program written in C# that communicates with various pieces of equipment that are connected via GPIB. For weeks this program has been working without issue. However, recently I swapped out a piece of equipment, and a single GPIB cable, and now I am getting a "Timeout expired before operation complete" error. If this was occurring all the time, I think it would be easier to troubleshoot. Unfortunately, it occurs unpredictably and often after several thousand successful queries. The basic flow of the program is making several hundred measurements, wait several minutes, make some more measurements and so on. How long it runs successfully before the error occurs seems to change every time I have run the program, with it making it between about 3 hours and 12 hours before an error. Any ideas on what may be causing such an error?

 

Clarification: I am working with a few pieces of equipment, but the error has always occurred when querying the single piece of equipment that I had recently swapped out. But, I'm not sure it can be completely ruled out that something else is going on with accessing the GPIB devices or something with NI-VISA.

Abort problem after installing NI-VISA 18.0.0 and PyVisa on Mac

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I am using Python 2.7 to do testing automation. I have installed PyVisa 1.9.0.

 

Before installing NI-Visa_18.0.0 for macOS 10.13.4, the message shows below after tying python -m visa info.

Machine Details:
Platform ID: Darwin-17.5.0-x86_64-i386-64bit
Processor: i386
Python:
Implementation: CPython
Executable: /usr/bin/python
Version: 2.7.10
Compiler: GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)
Bits: 64bit
Build: Oct 6 2017 22:29:07 (#default)
Unicode: UCS2
PyVISA Version: 1.9.0
Backends:
ni:
Version: 1.9.0 (bundled with PyVISA)
Binary library: Not found
py:
Version: 0.2
ASRL INSTR: Available via PySerial (3.4)
TCPIP INSTR: Available
USB RAW:
Please install PyUSB to use this resource type.
No module named usb
USB INSTR:
Please install PyUSB to use this resource type.
No module named usb
GPIB INSTR:
Please install linux-gpib to use this resource type.
No module named gpib
TCPIP SOCKET: Available

However, after NI-Visa_18.0.0 installation and tying python -m visa info, it shows abort trap:6. It looks like it is the problem in /Library/Frameworks/nipalu.framework/Versions/1/nipalu.

 

The same problem showed in https://github.com/pyvisa/pyvisa/issues/339. But it is not resolved.

 

Any idea to this problem?

 

Thanks,

Philex

 

The full problem report:

Process: Python [1593]
Path: /System/Library/Frameworks/Python.framework/Versions/2.7/Resources/Python.app/Contents/MacOS/Python
Identifier: Python
Version: 2.7.10 (2.7.10)
Code Type: X86-64 (Native)
Parent Process: bash [790]
Responsible: Python [1593]
User ID: 783402280

PlugIn Path: /Library/Frameworks/nipalu.framework/Versions/1/nipalu
PlugIn Identifier: com.ni.framework.nipalu
PlugIn Version: 18.0.0 (18.0.0f0)

Date/Time: 2018-07-13 13:25:24.114 +0100
OS Version: Mac OS X 10.13.4 (17E202)
Report Version: 12
Bridge OS Version: 3.0 (14Y664)
Anonymous UUID: 48737E74-FF6F-D986-6AA0-02111A2BD070

Time Awake Since Boot: 1000 seconds

System Integrity Protection: enabled

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY

Application Specific Information:
/Library/Frameworks/nipalu.framework/Versions/1/nipalu
abort() called

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff7685bb6e __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff76a26080 pthread_kill + 333
2 libsystem_c.dylib 0x00007fff767b71ae abort + 127
3 com.ni.framework.nipalu 0x000000010276e074 0x1026fd000 + 462964
4 com.ni.framework.nipalu 0x000000010276e469 0x1026fd000 + 463977
5 dyld 0x00000001005f6a7a ImageLoaderMachO::doModInitFunctions(ImageLoader::LinkContext const&) + 420
6 dyld 0x00000001005f6caa ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&) + 40
7 dyld 0x00000001005f21cc ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 330
8 dyld 0x00000001005f215f ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, char const*, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 221
9 dyld 0x00000001005f1302 ImageLoader:Smiley TonguerocessInitializers(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&, ImageLoader::UninitedUpwards&) + 134
10 dyld 0x00000001005f1396 ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&) + 74
11 dyld 0x00000001005e53e5 dyld::runInitializers(ImageLoader*) + 82
12 dyld 0x00000001005ee05c dlopen + 527
13 libdyld.dylib 0x00007fff7670cd86 dlopen + 86
14 com.apple.CoreFoundation 0x00007fff4e45267b _CFBundleDlfcnLoadFramework + 139
15 com.apple.CoreFoundation 0x00007fff4e41d570 _CFBundleLoadExecutableAndReturnError + 624
16 com.apple.CoreFoundation 0x00007fff4e455d40 CFBundleGetFunctionPointerForName + 48
17 visa 0x0000000101af6966 visaLibSymbol + 54
18 visa 0x0000000101af6d52 0x101adc000 + 109906
19 visa 0x0000000101afb75e 0x101adc000 + 128862
20 visa 0x0000000101b0803c viOpenDefaultRM + 668
21 libffi.dylib 0x00007fff7505bf64 ffi_call_unix64 + 76
22 libffi.dylib 0x00007fff7505c77c ffi_call + 808
23 _ctypes.so 0x00000001014ff895 _ctypes_callproc + 667
24 _ctypes.so 0x00000001014f9e16 0x1014f7000 + 11798
25 org.python.python 0x00007fff58b54581 PyObject_Call + 97
26 org.python.python 0x00007fff58bcaf76 PyEval_EvalFrameEx + 2898
27 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
28 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
29 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
30 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
31 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
32 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
33 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
34 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
35 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
36 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
37 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
38 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
39 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
40 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
41 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
42 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
43 org.python.python 0x00007fff58bcba8f PyEval_EvalFrameEx + 5739
44 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
45 org.python.python 0x00007fff58bd02b4 0x7fff58b4a000 + 549556
46 org.python.python 0x00007fff58bcab45 PyEval_EvalFrameEx + 1825
47 org.python.python 0x00007fff58bca232 PyEval_EvalCodeEx + 1551
48 org.python.python 0x00007fff58b71935 0x7fff58b4a000 + 162101
49 org.python.python 0x00007fff58b54581 PyObject_Call + 97
50 org.python.python 0x00007fff58bf9b65 0x7fff58b4a000 + 719717
51 org.python.python 0x00007fff58bf9650 Py_Main + 2268
52 libdyld.dylib 0x00007fff7670b015 start + 1

Thread 1:
0 libsystem_kernel.dylib 0x00007fff7685c292 __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff76a23009 _pthread_wqthread + 1035
2 libsystem_pthread.dylib 0x00007fff76a22be9 start_wqthread + 13

Thread 2:
0 libsystem_pthread.dylib 0x00007fff76a22bdc start_wqthread + 0

Thread 3:
0 libsystem_pthread.dylib 0x00007fff76a22bdc start_wqthread + 0

Thread 4:
0 libsystem_kernel.dylib 0x00007fff7685ba1e __psynch_cvwait + 10
1 libsystem_pthread.dylib 0x00007fff76a24589 _pthread_cond_wait + 732
2 com.ni.framework.UsbPassport 0x000000010269d5bb 0x10269a000 + 13755
3 libsystem_pthread.dylib 0x00007fff76a23661 _pthread_body + 340
4 libsystem_pthread.dylib 0x00007fff76a2350d _pthread_start + 377
5 libsystem_pthread.dylib 0x00007fff76a22bf9 thread_start + 13

Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x00007fffaed3b380 rcx: 0x00007ffeef809808 rdx: 0x0000000000000000
rdi: 0x0000000000000307 rsi: 0x0000000000000006 rbp: 0x00007ffeef809840 rsp: 0x00007ffeef809808
r8: 0x0000000000000013 r9: 0x0000000000000000 r10: 0x0000000000000000 r11: 0x0000000000000206
r12: 0x0000000000000307 r13: 0x0000000000000002 r14: 0x0000000000000006 r15: 0x000000000000002d
rip: 0x00007fff7685bb6e rfl: 0x0000000000000206 cr2: 0x00007fffa8587370

Logical CPU: 0
Error Code: 0x02000131
Trap Number: 133

Binary Images:
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0x7fff74644000 - 0x7fff74654ff3 libbsm.0.dylib (39) <6BC96A72-AFBE-34FD-91B1-748A530D8AE6> /usr/lib/libbsm.0.dylib
0x7fff74655000 - 0x7fff74662ffb libbz2.1.0.dylib (38) <0A5086BB-4724-3C14-979D-5AD4F26B5B45> /usr/lib/libbz2.1.0.dylib
0x7fff74663000 - 0x7fff746b9fff libc++.1.dylib (400.9) <7D3DACCC-3804-393C-ABC1-1A580FD00CB6> /usr/lib/libc++.1.dylib
0x7fff746ba000 - 0x7fff746deff7 libc++abi.dylib (400.8.2) /usr/lib/libc++abi.dylib
0x7fff746e0000 - 0x7fff746f0fff libcmph.dylib (6) /usr/lib/libcmph.dylib
0x7fff746f1000 - 0x7fff74707fff libcompression.dylib (47.50.1) <491784AE-CB90-3E27-9081-95C3A1211760> /usr/lib/libcompression.dylib
0x7fff749b2000 - 0x7fff749caff7 libcoretls.dylib (155.50.1) /usr/lib/libcoretls.dylib
0x7fff749cb000 - 0x7fff749ccff3 libcoretls_cfhelpers.dylib (155.50.1) /usr/lib/libcoretls_cfhelpers.dylib
0x7fff74b65000 - 0x7fff74cf6fff libcrypto.35.dylib (22.50.2) <97828BFD-4675-35DF-BE2E-C6D1555BB71D> /usr/lib/libcrypto.35.dylib
0x7fff74e9d000 - 0x7fff74ef3ff3 libcups.2.dylib (462.2) <64864CBE-03A3-34C7-9DBB-C93601F183FD> /usr/lib/libcups.2.dylib
0x7fff75033000 - 0x7fff75033fff libenergytrace.dylib (16) /usr/lib/libenergytrace.dylib
0x7fff75034000 - 0x7fff7504dffb libexpat.1.dylib (16.1.1) <5E1796FA-4041-3187-B5C2-8E6B03D1D72A> /usr/lib/libexpat.1.dylib
0x7fff7505b000 - 0x7fff7505cfff libffi.dylib (18.1) <02011073-8CB7-362F-BC52-43B4E83687B0> /usr/lib/libffi.dylib
0x7fff7506a000 - 0x7fff7506fff3 libheimdal-asn1.dylib (520.50.6) /usr/lib/libheimdal-asn1.dylib
0x7fff7509b000 - 0x7fff7518cff7 libiconv.2.dylib (51.50.1) <2FEC9707-3FAF-3828-A50D-8605086D060F> /usr/lib/libiconv.2.dylib
0x7fff7518d000 - 0x7fff753b4ffb libicucore.A.dylib (59173.0.1) /usr/lib/libicucore.A.dylib
0x7fff75401000 - 0x7fff75402fff liblangid.dylib (128) <39C39393-0D05-301D-93B2-F224FC4949AA> /usr/lib/liblangid.dylib
0x7fff75403000 - 0x7fff7541cffb liblzma.5.dylib (10) <3D419A50-961F-37D2-8A01-3DC7AB7B8D18> /usr/lib/liblzma.5.dylib
0x7fff7541d000 - 0x7fff75433ff7 libmarisa.dylib (9) /usr/lib/libmarisa.dylib
0x7fff754e4000 - 0x7fff7570cff7 libmecabra.dylib (779.7.6) /usr/lib/libmecabra.dylib
0x7fff758e4000 - 0x7fff75a5efff libnetwork.dylib (1229.51.2) /usr/lib/libnetwork.dylib
0x7fff75add000 - 0x7fff75ecb7e7 libobjc.A.dylib (723) /usr/lib/libobjc.A.dylib
0x7fff75ede000 - 0x7fff75ee2fff libpam.2.dylib (22) <7B4D2CE2-1438-387A-9802-5CEEFBF26F86> /usr/lib/libpam.2.dylib
0x7fff75ee5000 - 0x7fff75f19fff libpcap.A.dylib (79.20.1) /usr/lib/libpcap.A.dylib
0x7fff75f98000 - 0x7fff75fb4ffb libresolv.9.dylib (65) /usr/lib/libresolv.9.dylib
0x7fff76005000 - 0x7fff76198ff7 libsqlite3.dylib (274.8.1) /usr/lib/libsqlite3.dylib
0x7fff761f4000 - 0x7fff76247ffb libssl.35.dylib (22.50.2) /usr/lib/libssl.35.dylib
0x7fff7629a000 - 0x7fff762e8fff libstdc++.6.0.9.dylib (104.1) <0EA35E7E-B536-3628-B462-A4098805CEAC> /usr/lib/libstdc++.6.0.9.dylib
0x7fff7636c000 - 0x7fff763ccff3 libusrtcp.dylib (1229.51.2) <3D8806D9-4BA9-35EE-BC44-F58BC2A0962D> /usr/lib/libusrtcp.dylib
0x7fff763cd000 - 0x7fff763d0ffb libutil.dylib (51.20.1) <216D18E5-0BAF-3EAF-A38E-F6AC37CBABD9> /usr/lib/libutil.dylib
0x7fff763d1000 - 0x7fff763defff libxar.1.dylib (400) <0316128D-3B47-3052-995D-97B4FE5491DC> /usr/lib/libxar.1.dylib
0x7fff763e2000 - 0x7fff764c9fff libxml2.2.dylib (31.10) <503721DB-0D8D-379E-B743-18CE59304155> /usr/lib/libxml2.2.dylib
0x7fff764ca000 - 0x7fff764f2fff libxslt.1.dylib (15.12) <4A5E011D-8B29-3135-A52B-9A9070ABD752> /usr/lib/libxslt.1.dylib
0x7fff764f3000 - 0x7fff76505ffb libz.1.dylib (70) <48C67CFC-940D-3857-8DAD-857774605352> /usr/lib/libz.1.dylib
0x7fff765a1000 - 0x7fff765a5ff7 libcache.dylib (80) <092479CB-1008-3A83-BECF-E115F24D13C1> /usr/lib/system/libcache.dylib
0x7fff765a6000 - 0x7fff765b0ff3 libcommonCrypto.dylib (60118.50.1) <029F5985-9B6E-3DCB-9B96-FD007678C6A7> /usr/lib/system/libcommonCrypto.dylib
0x7fff765b1000 - 0x7fff765b8fff libcompiler_rt.dylib (62) <968B8E3F-3681-3230-9D78-BB8732024F6E> /usr/lib/system/libcompiler_rt.dylib
0x7fff765b9000 - 0x7fff765c2ffb libcopyfile.dylib (146.50.5) <3885083D-50D8-3EEC-B481-B2E605180D7F> /usr/lib/system/libcopyfile.dylib
0x7fff765c3000 - 0x7fff76648fff libcorecrypto.dylib (562.50.17) <67007279-24E1-3F30-802D-A55CD5C27946> /usr/lib/system/libcorecrypto.dylib
0x7fff766d0000 - 0x7fff76709ff7 libdispatch.dylib (913.50.12) <848EEE57-4235-3A61-9A52-C0097DD2AB5E> /usr/lib/system/libdispatch.dylib
0x7fff7670a000 - 0x7fff76727ff7 libdyld.dylib (551.3) /usr/lib/system/libdyld.dylib
0x7fff76728000 - 0x7fff76728ffb libkeymgr.dylib (28) /usr/lib/system/libkeymgr.dylib
0x7fff76729000 - 0x7fff76735ff3 libkxld.dylib (4570.51.2) /usr/lib/system/libkxld.dylib
0x7fff76736000 - 0x7fff76736ff7 liblaunch.dylib (1205.50.76) <4D52BB64-C568-3A36-8935-2480427EE2A2> /usr/lib/system/liblaunch.dylib
0x7fff76737000 - 0x7fff7673bffb libmacho.dylib (906) <1902A611-081A-3452-B11E-EBD1B166E831> /usr/lib/system/libmacho.dylib
0x7fff7673c000 - 0x7fff7673eff3 libquarantine.dylib (86) <26C0BA22-8F93-3A07-9A4E-C8D53D2CE42E> /usr/lib/system/libquarantine.dylib
0x7fff7673f000 - 0x7fff76740ff3 libremovefile.dylib (45) <711E18B2-5BBE-3211-A916-56740C27D17A> /usr/lib/system/libremovefile.dylib
0x7fff76741000 - 0x7fff76758fff libsystem_asl.dylib (356.50.1) <3B24F2D1-B578-359D-ADB2-0ED19A364C38> /usr/lib/system/libsystem_asl.dylib
0x7fff76759000 - 0x7fff76759fff libsystem_blocks.dylib (67) <17303FDF-0D2D-3963-B05E-B4DF63052D47> /usr/lib/system/libsystem_blocks.dylib
0x7fff7675a000 - 0x7fff767e3ff7 libsystem_c.dylib (1244.50.9) <1187BFE8-4576-3247-8177-481554E1F9E7> /usr/lib/system/libsystem_c.dylib
0x7fff767e4000 - 0x7fff767e7ffb libsystem_configuration.dylib (963.50.8) /usr/lib/system/libsystem_configuration.dylib
0x7fff767e8000 - 0x7fff767ebffb libsystem_coreservices.dylib (51) <486000D3-D8CB-3BE7-8EE5-8BF380DE6DF7> /usr/lib/system/libsystem_coreservices.dylib
0x7fff767ec000 - 0x7fff767edfff libsystem_darwin.dylib (1244.50.9) <09C21A4A-9EE0-388B-A9D9-DFF8F6758791> /usr/lib/system/libsystem_darwin.dylib
0x7fff767ee000 - 0x7fff767f4ff7 libsystem_dnssd.dylib (878.50.17) <9033B909-BCF7-37EB-A040-ADE8081611D6> /usr/lib/system/libsystem_dnssd.dylib
0x7fff767f5000 - 0x7fff7683eff7 libsystem_info.dylib (517.30.1) /usr/lib/system/libsystem_info.dylib
0x7fff7683f000 - 0x7fff76865ff7 libsystem_kernel.dylib (4570.51.2) <7FF1E390-2FAC-33A7-A545-60D9BB6692D4> /usr/lib/system/libsystem_kernel.dylib
0x7fff76866000 - 0x7fff768b1fcb libsystem_m.dylib (3147.50.1) /usr/lib/system/libsystem_m.dylib
0x7fff768b2000 - 0x7fff768d1fff libsystem_malloc.dylib (140.50.6) <7FD43735-9DDD-300E-8C4A-F909A74BDF49> /usr/lib/system/libsystem_malloc.dylib
0x7fff768d2000 - 0x7fff76a02ff3 libsystem_network.dylib (1229.51.2) /usr/lib/system/libsystem_network.dylib
0x7fff76a03000 - 0x7fff76a0dffb libsystem_networkextension.dylib (767.50.25) <758F1414-796D-3422-83C9-92D2915A06CE> /usr/lib/system/libsystem_networkextension.dylib
0x7fff76a0e000 - 0x7fff76a17ff3 libsystem_notify.dylib (172) <08012EC0-2CD2-34BE-BF93-E7F56491299A> /usr/lib/system/libsystem_notify.dylib
0x7fff76a18000 - 0x7fff76a1fff7 libsystem_platform.dylib (161.50.1) <6355EE2D-5456-3CA8-A227-B96E8F1E2AF8> /usr/lib/system/libsystem_platform.dylib
0x7fff76a20000 - 0x7fff76a2bfff libsystem_pthread.dylib (301.50.1) <0E51CCBA-91F2-34E1-BF2A-FEEFD3D321E4> /usr/lib/system/libsystem_pthread.dylib
0x7fff76a2c000 - 0x7fff76a2ffff libsystem_sandbox.dylib (765.50.51) /usr/lib/system/libsystem_sandbox.dylib
0x7fff76a30000 - 0x7fff76a31ff3 libsystem_secinit.dylib (30) /usr/lib/system/libsystem_secinit.dylib
0x7fff76a32000 - 0x7fff76a39ff7 libsystem_symptoms.dylib (820.50.37) /usr/lib/system/libsystem_symptoms.dylib
0x7fff76a3a000 - 0x7fff76a4dfff libsystem_trace.dylib (829.50.17) <6568D68B-1D4C-38EE-90A9-54821D6403C0> /usr/lib/system/libsystem_trace.dylib
0x7fff76a4f000 - 0x7fff76a54ff7 libunwind.dylib (35.3) /usr/lib/system/libunwind.dylib
0x7fff76a55000 - 0x7fff76a82fff libxpc.dylib (1205.50.76) <25DB244E-217D-3CE0-A8F2-0C4255783B42> /usr/lib/system/libxpc.dylib

External Modification Summary:
Calls made by other processes targeting this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by this process:
task_for_pid: 0
thread_create: 0
thread_set_state: 0
Calls made by all processes on this machine:
task_for_pid: 946
thread_create: 0
thread_set_state: 0

VM Region Summary:
ReadOnly portion of Libraries: Total=306.2M resident=0K(0%) swapped_out_or_unallocated=306.2M(100%)
Writable regions: Total=72.2M written=0K(0%) resident=0K(0%) swapped_out=0K(0%) unallocated=72.2M(100%)

 

REGION TYPE SIZE COUNT (non-coalesced)
=========== ======= =======
Activity Tracing 256K 2
Dispatch continuations 8192K 2
Kernel Alloc Once 8K 2
MALLOC 39.3M 18
MALLOC guard page 32K 9
MALLOC_LARGE (reserved) 4096K 2 reserved VM address space (unallocated)
STACK GUARD 56.0M 6
Stack 10.0M 6
VM_ALLOCATE 10.3M 28
__DATA 15.3M 236
__FONT_DATA 4K 2
__LINKEDIT 195.4M 48
__TEXT 110.9M 232
__UNICODE 560K 2
shared memory 608K 5
=========== ======= =======
TOTAL 450.5M 585
TOTAL, minus reserved VM space 446.5M 585

Model: MacBookPro14,2, BootROM MBP142.0173.B00, 2 processors, Intel Core i7, 3.5 GHz, 16 GB, SMC 2.44f1
Graphics: Intel Iris Plus Graphics 650, Intel Iris Plus Graphics 650, Built-In
Memory Module: BANK 0/DIMM0, 8 GB, LPDDR3, 2133 MHz, 0x802C, 0x4D5435324C31473332443450472D30393320
Memory Module: BANK 1/DIMM0, 8 GB, LPDDR3, 2133 MHz, 0x802C, 0x4D5435324C31473332443450472D30393320
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x171), Broadcom BCM43xx 1.0 (7.77.37.29.1a7)
Bluetooth: Version 6.0.5f3, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en0
PCI Card: pci1b73,1100, USB eXtensible Host Controller, Thunderbolt@196,0,0
PCI Card: ethernet, Ethernet Controller, Thunderbolt@195,0,0
PCI Card: pci8086,15d4, USB eXtensible Host Controller, Thunderbolt@197,0,0
USB Device: USB 3.0 Bus
USB Device: iBridge
USB Device: USB 3.0 Bus
USB Device: USB audio CODEC
USB Device: USB Optical Mouse
USB Device: USB 3.1 Bus
USB Device: 4-Port USB 2.0 Hub
USB Device: BillBoard Device
Thunderbolt Bus: MacBook Pro, Apple Inc., 33.1
Thunderbolt Bus: MacBook Pro, Apple Inc., 33.1
Thunderbolt Device: Thunderbolt 3 Express Dock HD, Belkin International, Inc., 1, 19.1

 

Ni 8452 I2C SCL

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Hi,

 

I have ni 8452 and i am working I2C. My problem is that I send example c code to device but i don't observe any clock waveform or data on oscilloscope. Can you help me? How can i see clock waveform. Also, i use pull up resistor.

 

Thanks. 

Cannot get a query from USB Tekpower TP3005P power supply

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Hi everyone,

I am having a problem with getting a simple *IDN? query from my usb connected DC power supply through VISA test panel.  The device is shown in NI MAX as ASRL5::INSTR"COM5" and device status is working properly I get timeout error when trying to get a query.  FYI, the interface works with their own data logging software and in their user manual they have example SCPI commands. 

 

Thank you in advance for the help!

Labview driver for TDS510A

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Hi,

 

Is there a labview driver available for TDS510A oscilloscope?

 

Thank you,

-Lorenzo

current measurement at selected voltage for keithley 6487 picoammeter

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I am totally new in this platform and need help regarding continuous current/resistance  measurement using Keithley 6487 picoammeter and a serial bus (rs-232 straight through cable).

The current/resistance measured shall be made at a user defined voltage.

It would be great if someone with the same issue has a help on offer.

 

Best Regards

NI-488.2 compatibility gpib-enet 1000 and gpib-enet 100

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Is there a version of NI-488.2 that will work with either gpib-enet 1000 or gpib-enet 100? When I look at this table, http://www.ni.com/product-documentation/53332/en/ , its shows different LabVIEW versions but not a transition version where I can replace the enet 1000 with enet 100.

 

Does newer drivers version of the ni488.2, work with older harder and older LabVIEW version, like the enet 100. Can anyone confirm this works?

 

Rich J


NI8452 I2C High Speed Mode

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Attempting to operate the Ni8452 in I2C high speed mode using the Ni845x.dll (v16.0.0.49152) installed on a Windows 10 PC and seeing an address ack error when calling ni845xI2cWriteRead() using the basic API. The address seen on the bus (i.e. 04, see attached trace) is not correct, but this is not what was set via ni845xI2cConfigurationSetAddress. After changing the HS enable bit back to 'disabled', the call then works correctly (address 16 is seen on the bus and the data is read correctly). The clock rate has been left at the default value (reads 1700). Any pointers on how to get this working?

NI8452 USB Reconnects

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After disconnecting and re-connecting the USB cable from a Windows 10 PC to a Ni8452 dongle, the Ni845x.dll library is reporting the following error:

 

Ni845xError: NI-845x:  An internal error has occurred. Contact National Instruments technical support at ni.com/support.

 Is there a newer version of the DLL available that might resolve this issue?

PXI-VISA-MATLAB

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Running the following Matlab code:

Visa6541Address = 'PXI17::14::INSTR';

vv=visa('ni',Visa6541Address)
fopen(vv)

reg1 = memread(vv,0,'uint16','PXICFG',3)

fclose(vv)

 

Results in reg1 = 4243, 28887,6

Where is there a reference to tell me what these number mean please?

 Thanks for any suggestions you can offer!

Extra data from Agilent N99XX Series Analyzer PnP Driver

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I'm having an odd issue with the "Read NA Trace Data.vi" inside this part of the Plug-and-Play driver set.  

 

For whatever reasons, this function is pulling two "sets" of data points, every time I call the function.   So in my application space, I'm doing a 401-point data dump.....but this function returns 802 data points (Capture.PNG).

 

Any thoughts?   I did not write this VI, used it as-is straight off the NI website.    Thanks,

Wait Indefinitely for Trigger Event (Labview VI)

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Greetings!

Fairly new to all this so bear with me. Let me know if this is even possible... 

 

Platform: Agilent / Keysight Technologies DSO-X 3054A Oscilloscope

Software: LabVIEW 2016 (64-bit)

Connection: USB-B 

 

My goal is to monitor a channel and wait for a trigger on the oscilloscope to occur.

All the trigger parameters will be modified from the oscilloscope. I am trying to have the host-computer just store data for the moment. 

 

If the trigger conditions are met OR "force trigger" button is pressed, then save an image of the oscilloscope and continue monitoring for the next trigger. 

 

I setup a small VI to save images, now all I need to do is make an infinite loop to "listen" for a trigger..?

 

I've read these examples that seem to be close to what I want but I do not know how they would be implemented properly. 

Using VISA handles events.

Stop Wait on Trigger example that uses DAQmx. 

New Port Spectrometer - Data Acquisition in LabVIEW

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Hi All,

I want to acquire data(Wavelength and count) from the spectrometer (New Port Model :71SI00151
SN : 71SI00151-0004). Please suggest me a method for acquiring data. Can i use DLL for extracting the same?

 

As i am new to LabVIEW development i am not getting where to start.

Thanks in Advance

Use USB 6341 as a serial device

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Platform: Windows10

LabVIEW 2016

 

 

I wrote a software (not LabView) which can listen to multiple serial devices data as long as the format are correct. 

 

Is it possible to configure the USB-6341 to act as a serial device that will output data to a COM port so that my software can listen to USB-6341 through the COM port? In summary, I want to send the collected data from USB-6341 to Putty serial connection. 

I found several resource about configuring LabView to communicate with other serial device, but I didn't find anything about making LabView/NI-Box act as a serial device. 


VISA: (Hex 0xBFFF0038) Bus error occurred during transfer.

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Hi,

 

I am trying to simultaneously communicate 3 different instruments (Keithley 2001, Keithley 2611A, Keithley 224) using GPIB (NI PCIe-GPIB). I checked the connection of these instrument using MAX (shown in the attached image) and it shows that they are connected. However, when I try to simultaneously run the said instruments, "VISA:  (Hex 0xBFFF0038) Bus error occurred during transfer" error occurred.

 

Also, I tried using just 2 instruments (Keithley 2001, Keithley 2611A) using GPIB (NI PCIe-GPIB), then I tried to communicate with Keithley 224 using a separate GPIB (GPIB-USB-HS), and it works well.

 

Question: Is there anyway to communicate 3 different instruments by just using GPIB (NI PCIe-GPIB)? I have also attached an actual image of the GPIB connections showing the (NI PCIe).

 

Thank you,

-Lorenzo

error -1073807194 when configuring serial port

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I am trying to connect to two devices using FTDI UC232R cables using VISA communication. I am able to find the COM ports and serial numbers for these cables, and they work once, the very first time I try to run my vi. If I stop the vi and try to run it again, the code might make a connection to one of the devices. If I try to run a third time after stopping the code the second time because I received error -1073807194 when configuring serial port, neither one of the devices are able to connect. I am still trying to understand VISA communication, and know this could potentially be a problem with the COM ports not closing properly, or there being invalid data being stored in the buffer, but I have tried changing this part of my code and still receive the error. My code will work if I completely close out of the project I am working from, and re-open the vi, but it will only for the first time like before. 

The image below shows where I configure my serial port. I have even tried adding a time delay between the first write as shown. I call VISA Write many other times throughout my code before closing it.VISA.PNG

I am not sure if I need to add a VISA break, flush, or clear anywhere.

Thanks.

Pushing max baud rates on cRIO-9045

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Hi all,

 

I'm assembling a headless data acquisition system for a range of mixed signals (RS232, CAN bus, AI, DI). I have an inertial navigation system that transmits at very high baud rates (up to 2Mbaud).

 

I wrote a simple serial polling VI that streams the raw binary data to disk and is able to keep up with the 2Mbaud rate with no issue. I tested it on my windows PC, using an FTDI USB/RS-232 adapter through NI-VISA. Works fine.

 

Moving to the cRIO, I see that the RS-232 port on the 9045 supports up to 115.2k. I also see that the FTDI device shows up in MAX if I plug it into the USB 2 port on the cRIO chassis. However, it's still limiting my max baud rate to 115.2k. Anything higher, and NI-VISA throws an error stating that the "configuration value is not allowed" (or something like that).

 

Can I get around that 115.2k ceiling? I can get away with cutting my baud rate to 1M, but not lower than that. I know the FTDI device isn't the bottleneck, as it functions on my PC without issue. Is it possible that I need to install a specific linux driver to utilize the higher speed?

SCPI command for TDS510A through VISA

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Hi,

 

I've searched and requested for the labview drive of TDS510A. Unfortunately, I still can't find one and have not yet received response from NI. I tried to read the programming manual (https://www.i3detroit.org/wi/images/2/2d/460-ProgrammerManual.pdf) of  the said instrument and it has SCPI command. I learn that I can use VISA to execute the SCPI command but have failed to properly communicate with my instrument.

 

Is anyone kind enough to give me a pattern or an example on how to properly communicate with my instrument? I am using GPIB-USB-HS. My goal is to just acquire data (e.i sine wave) and its corresponding *FFT

 

*According to manual, TDS510A can also provide FFT.

 

Any help is greatly appreciated.

 

Thank you,

-Lorenzo 

Insufficient location information, on iDRC Power supply via Ethernet

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 Good morning (at least here Smiley Happy),

 

I try to connect to a Programmable DC Power Supply - iDRC, DSP-060-025HD.

I connected the instrument to the Ethernet connection on my laptop directly.

 

When I open NI MAX i see - 

NI MAX.JPG

(What does the warning sign mean?)

Trying to open VISA test panel I get - 

Test panel.JPG

 

And yet I am able to access the device via chrome browser - 

Browser.JPG

And indeed the VISA address string does match whats displayed on MAX.

I was also able to successfully ping the device.

 

Labview visa open with the same VISA address string gives the same error as MAX.

 

Anyone has an idea about what the issue could be?

 

 

 

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