Hi,
I'm trying to setup an Automation Direct DirectLogic 06 (D0-06DD1) as a modbus slave, taking commands from a PC. The PLC is connected to the PC over port 1 with the standard programming cable, and I'm able to successfully read the digital inputs; however, I cannot update the digital outputs. I've tried both in TERM and RUN mode with no luck. I wrote a simple ladder program to change an output based on one of the inputs, and again I can successfully read the value of the output as it changes. Is there anything in particular I need to do so that digital outs can be updated via modbus RTU commands? Or maybe I'm missing something else entirely?
Thanks,
Justin
example program:
STRN X0
OUT Y1
END
I'm trying to setup an Automation Direct DirectLogic 06 (D0-06DD1) as a modbus slave, taking commands from a PC. The PLC is connected to the PC over port 1 with the standard programming cable, and I'm able to successfully read the digital inputs; however, I cannot update the digital outputs. I've tried both in TERM and RUN mode with no luck. I wrote a simple ladder program to change an output based on one of the inputs, and again I can successfully read the value of the output as it changes. Is there anything in particular I need to do so that digital outs can be updated via modbus RTU commands? Or maybe I'm missing something else entirely?
Thanks,
Justin
example program:
STRN X0
OUT Y1
END