Hi there Mark
http://forums.mrplc.com/index.php?download=512
Check out the above link, this may help, re your omron modbus application
regards
Derrick Stableford
Omrom PLC software can be a bit imtimidating if you dont know the addressing structure at first.
Tip 1- With Omron code, always obtain a copy of the programming manual for that particular PLC, available as a PDF file from Omron Websites-link to US/Canada site for best online manuals. The reason...