Hi all, I am using an RSTI-EP I/O card along with the EPXMBE101 Modbus/TCP network adapter. I have a Control Standard L license. I successfully connected to the I/O card via Modbus and can read inputs without any issues. However, when I try to write to the digital output modules using function code 15, I am unable to make any changes.
Here’s what I have done so far:
I created a small project using Structured Text.
I set up Modbus channels (as shown in the attached image) and mapped the pins. When I use cyclic mode, the connection results in an error. However, when I use the rising edge, the connection works, but I don’t see any changes on the I/O card.
For the output module, I assigned one bit to high.
After that, I ran CODESYS Control Win V3. (Should I be running the PLC as well?)
I built the program, but I am not receiving any response from the I/O card.
Could you please advise on what might be causing this issue?
Hi all, I am using an RSTI-EP I/O card along with the EPXMBE101 Modbus/TCP network adapter. I have a Control Standard L license. I successfully connected to the I/O card via Modbus and can read inputs without any issues. However, when I try to write to the digital output modules using function code 15, I am unable to make any changes.
Here’s what I have done so far:
I created a small project using Structured Text.
I set up Modbus channels (as shown in the attached image) and mapped the pins. When I use cyclic mode, the connection results in an error. However, when I use the rising edge, the connection works, but I don’t see any changes on the I/O card.
For the output module, I assigned one bit to high.
After that, I ran CODESYS Control Win V3. (Should I be running the PLC as well?)
I built the program, but I am not receiving any response from the I/O card.
Could you please advise on what might be causing this issue?