4
Fault and No-Fault Contacts
Fault and No Fault contacts are set to the first %I bit reference address of the module to
be monitored. If the Fault bit is set and the No Fault bit is cleared, the CPU is not
communicating with the module. If the Fault bit is cleared and the No Fault bit is set, the
CPU is communicating with the module.
GFK-2749
Chapter 4 Diagnostics
4-3