Troubleshooting - Omron CQM1 Operation Manual

Troubleshooting

Errors
I/O word setting error
I/O unit overflow
Defective CQM1H/CQM1 unit connection
No end cover CQM1H/CQM1 initial check NG
Master unit error
Slave set between #28 and #30.
Incorrect transmission path setting.
Terminator not turned on.
Duplicate terminator setting.
Duplicate Expansion Master Unit #.
Slave address setting error
Transmission path shorted/discontinuity
Slave power off/CPU out of control
Output error from Slave with error detection function.
Note Indicators shown with "**" differ from normal status.
Master
RDY T/R T/R
RDY
X* –– ––
–– X X
X**
X**
X**
X**
X**
X** **
X** **
END NODE ALM
–– –– ––
X X X
** **(X) ––
** X ––
** X ––
** X ––
** X** ––
X
X –– ––
X –– ––
X X **
Appendix B
Expansion
Master
RDY T/R
X ––
–– ––
**
**
**
**
**
**( )
X**
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