Event name Safety Process Data Communications Timeout Event code 80300000 hex
Meaning A communications timeout occurred in safety process data communications with the Safety Control Unit.
Source Depends on where the Sysmac
Studio is connected and the sys-
tem configuration.
Source details NX Unit Detection tim-
ing
In DEBUG
mode (ST
OP-
PED), DEBUG
mode (RUN),
or RUN mode
Error attrib-
utes
Level Minor fault Recovery Automatic re-
covery when
cause of error
is removed
Log category System
Effects
User program Continues. Operation The Unit continues to operate, but the safe states
are used for the I/O data of safety connection
where the error was detected.
System-de-
fined varia-
bles
Variable Data type Name
None None None
Cause and
correction
Assumed cause Correction Prevention
A setting is not correct. The set-
ting of the safety task period is
too short.
Increase the safety task period
and then transfer the settings to
the Safety CPU Unit.
Set the system configuration and
setup according to the correc-
tions that are given on the left.
There is excessive noise. Implement noise countermeas-
ures.
Implement noise countermeas-
ures if excessive noise caused
the error
.
The Safety CPU Unit or safety
slave entered a status where it
could not continue safety proc-
ess data communications.
Check the status of the Safety
CPU Unit or safety slave.
Refer to troubleshooting informa-
tion for the Safety CPU Unit or
safety slave.
An error or status change occur-
red in the NX Bus Master to
which the Unit is connected, pre-
venting correct process data
communications.
Check the status of the NX Bus
Master to which the Unit is con-
nected.
Set the system configuration and
setup according to the correc-
tions that are given on the left.
Attached in-
formation
None
Precautions/
Remarks
The relevant Units will maintain the safe states for I/O data with safety connections after an error is de-
tected. However
, when the cause of the error is removed, safety process data communications will re-
cover automatically
.
12 Troubleshooting
12 - 37
NX-series Safety Control Unit User's Manual (Z930)
12-3 Checking for Errors with the Sysmac Studio
12
12-3-4 Error Descriptions
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