when adding I/O through devicenet:
1. make sure to have correct wiring (terminators at ends, bus need to be powered, drain grounded at one point...)
2. choose baud rate which is supported by all slaves
3. assign node address (aka "macid") to each slave (usually dip switches or dials)
4. edit DevNet.INI (set same bus baud rate for MFC, list all slaves)
5. edit IOSYS.INI (enable driver, in case of MFC it is DN2DRV; map I/O)
mapping I/Os can be tricky sometimes so if you have more than one slave, add them one at a time (steps 4 and 5)