ABB AC500-S Safety User Manual page 209

The FB detects whether none of the mode inputs is selected. This invalid condition is detected
after ModeMonitorTime has elapsed:
● Which restarts with each falling trigger of an S_ModeX switched mode input
● Which is then in the ModeChanged state following activation of the FB
In contrast, the FB directly detects whether more than one S_ModeX mode input is selected at
the same time.
A static reset condition is detected when the FB is either in error state C001 or C002.
Error behavior In the event of an error, the S_ModeXSel and S_AnyModeSel outputs are set to safe state =
FALSE. The DiagCode output indicates the relevant error code and the error output is set to
TRUE.
An error must be acknowledged with the rising trigger of the Reset BOOL input. The FB
changes from an error state to the ModeChanged state.
Function block- Table 28: FB-specific error codes
specific error
DiagCode
and status
codes C001
C002
C003
C004
2020/06/19
State name State description and output setting
Error The FB detected that two or more S_ModeX are TRUE, e.g.,
short-circuit of cables.
Short-circuit
Ready = TRUE
Error = TRUE
S_AnyModeSel = FALSE
All S_ModeXSel = FALSE
Error The FB detected that all S_ModeX are FALSE: The period fol-
lowing a falling S_ModeX trigger exceeds ModeMonitorTime, e.g.,
Open-circuit
open-circuit of cables.
Ready = TRUE
Error = TRUE
S_AnyModeSel = FALSE
All S_ModeXSel = FALSE
Reset Error Static reset signal detected in state C001.
1
Ready = TRUE
Error = TRUE
S_AnyModeSel = FALSE
All S_ModeXSel = FALSE
Reset Error Static reset signal detected in state C002.
2
Ready = TRUE
Error = TRUE
S_AnyModeSel = FALSE
All S_ModeXSel = FALSE
3ADR025091M0208, 12, en_US
Configuration and programming
AC500-S libraries > SafetyBlocks_PLCopen_AC500_v22.lib
209