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NE1A Series Monitoring Section 4-6
4-6-2 Monitoring the NE1A-SCPU02
Note (1) Safety Input Error Cause
When an error is indicated for the safety input status, the cause of the er-
ror can be acquired by reading this information.
Specify the terminal number for which the error cause is to be acquired,
plus 1, for the specified instance ID specified. For example, to acquire the
error cause for terminal No. 0, specify 01 hex for the instance ID.
Read Data Format (Read Size: 1 Byte)
Error Cause
(2) Safety Output Error Cause
When an error is indicated for the safety output status, the cause of the
error can be acquired by reading this information.
Specify the terminal number for which the error cause is to be acquired,
plus 1, for the instance ID specified at that time. For example, to acquire
the error cause for terminal No. 0, specify 01 hex for the instance ID.
Read Data Format (Read Size: 1 Byte)
Error Cause
Service code Class ID Instance ID Request data
(attribute ID)
Safety input terminal monitor
Safety input monitor 4B hex 306 hex 01 hex 00000005 hex (See note 4.)
Safety input status 4B hex 306 hex 0B hex 00000006 hex (See note 5.)
Safety input error cause (See note 1.) 0E hex 3D hex 01 to 28 hex 6E hex
Safety output terminal monitor
Safety output monitor 4B hex 306 hex 02 hex 00000001 hex (See note 6.)
Safety output status 4B hex 306 hex 0C hex 00000004 hex (See note 7.)
Safety output error cause (See note 2.) 0E hex 3B hex 01 to 08 hex 6E hex
Overall status monitor
Overall status (See note 3.) 0E hex 39 hex 01 hex 6E hex
+0 Error cause
Value Meaning
0 No error
1 Illegal configuration
2 Test signal error
3 Internal circuit error
4 Discrepancy error
5 Error at dual channel partner
+0 Error cause
Value Meaning
0 No error
1 Illegal configuration
2 Overcurrent detected
3 Short-circuit detected
4 Output ON error
5 Error at dual channel partner
6 Internal bit circuit error
7 Bit error
8 Illegal data between dual channel outputs
9 Short-circuit detected between wires
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