Omron NX-SL series

4 - 97
4 Safety Function Blocks
NX-series Safety Control Unit Instructions Reference Manual (Z931)
4
SF_MutingSeq
 Error Detected
The FB detects the following errors.
• MutingSwitch11, MutingSwitch12, MutingSwitch21, and MutingSwitch22 operated in an incorrect
order.
• A muting sequence started without being enabled by MutingEnable.
• A muting lamp failure was indicated (S_MutingLamp = FALSE).
• An undetected change to TRUE in the Reset input was detected in state 8001 or 8003.
• MaxMutingTime is set to less than T#0s or more than T#10min.
• Muting (S_MutingActive = TRUE) exceeded MaxMutingTime (maximum muting time).
 Operation for Errors
• When an error occurs, the S_AOPD_Out and S_MutingActive outputs are set to FALSE. The
DiagCode output gives the relevant error code and the Error output is set to TRUE.
• Operation is not restarted until the error is reset and the operator acknowledges the safe state
with Reset.
 FB-specific Error Codes
Instruction Execution Errors
DiagCode (hexadecimal)
DiagCode
(decimal)
Status name Status description and output results
C001 49153 Reset Error 1 When the Init state was entered, an undetected
change to TRUE in the Reset input was detected.
Ready = TRUE
S_AOPD_Out = FALSE
S_MutingActive = FALSE
Error = TRUE
C002 49154 Reset Error 2 When the Wait for Reset state was entered, an
undetected change to TRUE in the Reset input
was detected.
Ready = TRUE
S_AOPD_Out = FALSE
S_MutingActive = FALSE
Error = TRUE
C003 49155 Error Muting lamp An error was detected in the muting lamp.
Ready = TRUE
S_AOPD_Out = FALSE
S_MutingActive = FALSE
Error = TRUE