ml1400 ML1400: Manipulate output through modbus/tcp

[MikosMotta 0]

Hello
I have a scenario that's been bugging me for some time now.
The scenario consists of a Micrologix 1400 that I need to control it's output from modbus/tcp.
In detail what I really need is to be able to manipulate the O0:0 through modbus/tcp. The PLC would be the master and I would be the slave that triggers the connection to the master.
I'm using a Modbus-Client on my PC and that should be the slave.
Any idea as to how I can manage that?
Currently I can send data to the master but everything is "stored" on B10 and I have no idea how I could write directly on O0.
Thanks a bunch guys.

PS: I'm borderline noob. 

[Joe E. 259]

To control a bit at a time, investigate the XIC and OTE instructions. To control a word or 2 at a time (all outputs at once), look at the MOV and COP instructions.

Consider also how to handle problems. You WILL at some point have a communications error between the PC and PLC, invalidating the data stored in B10. You need to have a way to detect that failure and respond to it in a fail-safe manner.

 

 

Edited 13 Nov 2018 by Joe E.