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« on: April 08, 2014, 02:39:00 PM »
Ok I think I am understanding what you are asking, is it that you want to have an output from the PLC via Modbus to signal Mach to Feed Hold?
If so then you do not use the LED in Mach.
You could do it several ways, via OEM triggers as you mentioned, via the macropump or via Brains or a combination of them.
With the OEM Trigger what you would do is set the port and pin number next to the OEM trigger you wish to use. Then in System HotKeys you would enter the OEM code for the function you wish in the box next to the OEM Trigger you are using.
Ok so for port and pin number, Port is 0 for Non-Plugin Serial Modbus and the pin number will be whatever the output from the PLC is, for example in my pic above you see B2001.1,B2001.2, B2001.3, B2001.4, so they would represent Pin 1, 2, 3 and 4 respectively. So if you were using B2001.3 then the OEM trigger would be set to Port 0 Pin 3
Now onto the OEM code for the trigger in SystemHotkeys. You are wanting FeedHold so you look to see what the OEM code is for the FeedHold button, it is 1001 so that is the number you would enter.
Hood