OMRON SYSMAC BUS module CQM1-G7M21
Model: CQM1-G7M21.
Connects CQM1H to G730 SYSMAC BUS remote I/O
modules; max. 64 I/O (32 or 16 inputs or outputs, DIP switch selectable)
Number of I/O points per Master: 128
Communications cycle time: 187.5 kbps
Max. transmission distance: 200 m
One master and two expansions allowed per system