Omron NX-SL3500

Event name NX Bus I/O Communications Stopped Event code 84F10000 hex
Meaning An error occurred in I/O communications between the NX Bus Master and an NX Unit.
Source Depends on where the Sysmac
Studio is connected and the sys-
tem configuration.
Source details NX Unit Detection tim-
ing
Continuously
Error attrib-
utes
Level Minor fault Recovery Cycle the pow-
er supply to the
NX bus master
and NX Units.
Log category System
Effects User program Continues. Operation The NX Units will continue to operate.
• Input data:
An error occurs in safety process data communi-
cations because refreshing is stopped. The val-
ues of the status in standard process data are
not refreshed.
• Output data:
An error occurs in safety process data communi-
cations because 0’
s are output.
System-de-
fined varia-
bles
Variable Data type Name
None None None
Cause and
correction
Assumed cause Correction Prevention
There is a hardware error in the
NX bus master or an NX Unit.
If the error occurs again even af-
ter you cycle the power supply to
the NX Units, replace the NX Bus
Master or the NX Unit.
None
Attached in-
formation
None
Precautions/
Remarks
None
l
Safety I/O Errors
12 Troubleshooting
12 - 76
NX-series Safety Control Unit User's Manual (Z930)