kiethly 230 programmable voltage source

I am trying to communicate with the Kiethley 230 programmable voltage source , with Lab view using the Visa Instrument I/O.

I have a text control that sends a string to the VISA reource and a string constant that sends the address (GPIB0::13::INSTR). The Text input is

                    REMOTE 13013 \n OUTPUT 13013 ; "P0X"  

That should set the program mode to single but the device gives the IDDCO error.

a digital Multi-meter is also daisychaied to the GPIB and has an address (GPIB0:10::INSTR). using the same vi and the new address the DMM executed the instruction

                    REMOTE 10010 \n OUTPUT 10010 ; "F1X"

and it responded as it should by change the mode to read AC voltages.

I read the manuals and the synatax for both devices are similar. could you tell me what may be the issue why the programable voltage source may not be executing the instruction.