For 1770-M11 System Only - Allen-Bradley 1770-M10 Assembly And Installation Manual

For 1770-M11 System Only

Symptom Probable Cause
Improper interaction 1770-CD twinaxle cable not connected.
between 1770-M11 system
and the 1775-GA Twinaxial cable is not properly wired.
modules.
Peripheral communication module's
remote channel is not configured for disk
operations.
Two or more 1775-GA modules
connected with twinaxial cable have
identical unit numbers.
Baud rate is not set properly.
You did not enter the proper logical unit
address.
PLC-3 processor system or peripheral
communication module failed.
1770-M10 system address switch is not
properly set.
Micro-floppy is not properly seated into
the disk drive.
Chapter 5
Troubleshooting Your System
Recommended Action
Connect the twinaxial cable.
Refer to chapter 3 for proper wiring instructions.
Reconfigure the remote channel through LIST.
Renumber the 1775-GA module.
Set baud rate for 1770-M11 system; then press
the RESTART pushbutton.
Set baud rate for 1775-GA module.
Check your last entry on the CRT screen to verify
the logical unit address.
Troubleshoot the PLC-3 system.
Set internal switch assembly for the 1770=M10
system. Refer to chapter 3.
Eject micro-floppy and re-insert.
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