6-2 Troubleshooting
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.
6-2-1
Safety Input Errors
Code Error
Probable
cause
Countermeasure
01
hex
Configuration invalid
The configuration is invalid.
Configure the DST1 correctly.
02
hex
External test signal
failure
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
1) 2) Check the wiring.
3) Replace the connected
device.
03
hex
Internal input failure
Trouble with the internal circuits
Replace the DST1.
04
hex
Discrepancy error
1) Ground fault or break in an input
signal line
2) Trouble with the connected
device
1) Check the wiring.
2) Replace the connected
device.
05
hex
Error in the other dual
channel input
Dual channels are set and an error
occurred in the other channel.
Remove the error in the other
channel.
Explicit Message for Reading the Cause of the Error
Command
Explicit
message
Read/
write
Function
Service
code
Class
ID
Instance
ID
Attribute
ID
Data
size
Response
Safety Input
Cause of
Error
Information
Read
Read Reads
the
cause for the
normal flag (1
to 12) specified
by the instance
ID turning OFF.
(See note.)
0E hex
3D
hex
01 to 0C
hex
6E hex
−
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
Note: The instance numbers for safety inputs 0 to 11 are 1 to 12 (01 to 0C hex), respectively.
6-3
Summary of Contents for DST1 Series
Page 2: ......
Page 3: ......
Page 4: ......
Page 5: ...DST1 series Safety I O Terminals Operation Manual Produced April 2005 ...
Page 6: ......
Page 24: ...Section 1 Overview ...
Page 44: ...Section 2 General Procedure ...
Page 50: ...Section 3 Configuration ...
Page 63: ...Section 4 Specifications ...
Page 67: ...Section 5 DST1 series ...
Page 79: ...Section 6 Troubleshooting and Maintenance ...
Page 87: ...Section 7 Wiring Examples ...
Page 97: ...Appendices ...
Page 114: ...Cat No Z904 E1 01 OPERATION MANUAL DST1 series Safety I O Terminals ...