Publication 1771-6.5.132 - June 2000
7-4 Troubleshooting
91 Bus-off condition detected on comm
port. Module is detecting
communication errors.
Check DeviceNet connections and
physical media integrity. Check system
for failed slave devices or other possible
sources of network interference.
92 No network power detected on comm
port.
Provide network power. Make sure that
module drop cable is providing network
power to module comm port.
95 Application FLASH update in progress. None. Do not disconnect the module
while application FLASH is in progress.
You will lose any existing data in the
module’s memory.
97 Module halted by user command. Check ladder program for cause of fault
bits.
98 Unrecoverable firmware failure. Service or replace your module.
99 Unrecoverable hardware failure. Service or replace your module.
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