Troubleshooting; Safety Input Errors - Omron DeviceNet DST1 Series Operation Manual

6-2

Troubleshooting

I/O errors can be read out from safety input status, test output status, and safety output
status.
Status data when I/O is normal: ON (1)
Status data when an error occurs I/O: OFF (0)
The details of errors can be read out by using explicit messages and the Network
Configurator.
Note: For I/O error latch time settings, the OFF status is maintained for at least the error
latch time (0 to 65,530 ms, in increments of 10 ms) when individual safety input status
turns OFF.
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Safety Input Errors

Code Error
01 Configuration invalid
hex
02 External test signal
hex
failure
03 Internal input failure
hex
04 Discrepancy error
hex
05 Error in the other dual
hex
channel input
Explicit Message for Reading the Cause of the Error
Explicit Read/
message write
Safety Input Read Reads the
Cause of cause for the
Error normal flag (1
Information to 12) specified
Read by the instance
ID turning OFF.
(See note.)
Note: The instance numbers for safety inputs 0 to 11 are 1 to 12 (01 to 0C hex), respectively.
Probable cause
The configuration is invalid.
1) The power source (positive
side) is in contact with the input
signal line.
2) Short-circuit between input
signal lines
3) Trouble with the connected
device
Trouble with the internal circuits
1) Ground fault or break in an input
signal line
2) Trouble with the connected
device
Dual channels are set and an error
occurred in the other channel.
Function
Service Class
code ID
0E hex 3D
hex
Configure the DST1 correctly.
1) 2) Check the wiring.
3) Replace the connected
device.
Replace the DST1.
1) Check the wiring.
2) Replace the connected
device.
Remove the error in the other
channel.
Command
Instance Attribute Data
ID ID size
−
01 to 0C 6E hex
hex
6-2 Troubleshooting
Countermeasure
Response
0: No error
01 hex: Configuration invalid
02 hex: External test signal
failure
03 hex: Internal input failure
04 hex: Discrepancy error
05 hex: Error in the other
dual channel input
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