9 Troubleshooting
9 - 34
NX-series Safety Control Unit User’s Manual (Z930)
Event name Sysmac Studio Communications Connection Timeout Event code 951E0000 hex
Meaning A communications timeout occurred between the Sysmac Studio and the Safety CPU Unit.
Source Depends on where the Sysmac Stu-
dio is connected and the system con-
figuration.
Source details NX Unit Detection timing When applicable
Error attributes Level Information Recovery --- Log category System
Effects User program Continues. Operation If the CPU Unit was in DEBUG mode, it automatically
enters PROGRAM mode.
Variable Data type Name System-defined variables
None None None
Cause and
correction
Assumed cause Correction Prevention
The communications cable was dis-
connected.
Do not do anything to disconnect
communications with the Sysmac
Studio while the Safety CPU Unit is
operating in DEBUG mode.
Perform debugging considering the
corrections that are given on the left.
Attached
information
None
Precautions/
Remarks
None
Event name Clear All Memory Rejected Event code 951F0000 hex
Meaning Clearing all of memory failed.
Source Depends on where the Sysmac Stu-
dio is connected and the system con-
figuration.
Source details NX Unit Detection timing When com-
manded from
user
Error attributes Level Information Recovery --- Log category System
Effects User program Continues. Operation ---
System-defined
variables
Variable Data type Name
None None None
Cause and
correction
Assumed cause Correction Prevention
The Clear All Memory operation was
performed for the entire Slave Termi-
nal.
Specify the Units individually and per-
form the Clear All Memory operation.
Specify the Units individually and per-
form the Clear All Memory operation.
Attached
information
Attached information 1: The Clear All Memory operation was performed for the Slave Terminal.
Precautions/
Remarks
The Clear All Memory operation for the Safety CPU Unit cannot be performed for the entire Slave Terminal at the same
time.
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