Omron NJ501-1300, User Manual

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11 Troubleshooting
11-38
NJ-series CPU Unit Motion Control User’s Manual (W507)
Event name No Home Input Event code 742C0000 hex
Meaning There was no home signal input during the homing operation. Or, a limit signal was detected before there was a home
input.
Source Motion Control Function Module Source details Axis Detection
timing During instruc-
tion execution
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation The axis stops with the stop method for the homing execu-
tion status.
System-defined
variables Variable Data type Name
_MC_AX[*].MFaultLvl.Active BOOL Axis Minor Fault Occurrence
Cause and
correction Assumed cause Correction Prevention
• There was no home signal input
during the homing operation.
• A limit signal was detected before
there was a home input.
Check the home input settings and
wiring and correct them so that the
home signal is input during homing
based on the operation specifications
of the MC_Home instruction. Also, set
the system so that the home signal is
detected before the limit signals. Set the system so that the home sig-
nal is input during the homing opera-
tion. Make sure that the home signal
is detected before a limit signal. Also
check to make sure there are no wir-
ing problems with the home input.
Attached
information None
Precautions/
Remarks None
Event name No Home Proximity Input Event code 742D0000 hex
Meaning There was no home proximity signal input during the homing operation.
Source Motion Control Function Module Source details Axis Detection
timing During instruc-
tion execution
Error attributes Level Minor fault Recovery Error reset Log category System
Effects User program Continues. Operation The axis stops with the stop method for the homing execu-
tion status.
System-defined
variables Variable Data type Name
_MC_AX[*].MFaultLvl.Active BOOL Axis Minor Fault Occurrence
Cause and
correction Assumed cause Correction Prevention
There was no home proximity signal
input during the homing operation
when a home proximity input signal
was specified. Check the home proximity input set-
tings and wiring and correct them so
that the home proximity signal is input
during homing based on the operation
specifications of the MC_Home
instruction. Set the system so that the home prox-
imity signal is input during the homing
operation. Also check to make sure
there are no wiring problems with the
home proximity input.
Attached
information None
Precautions/
Remarks None