BECKHOFF EL6930 - Manual (Page 32)

Operation
30 EL6930
TwinSAFE group outputs
Name Permitted type Description
FB ERR TwinSAFE-Out
FB-In
Standard-Out
TRUE: At least one assigned function block has an error
FALSE: All assigned function blocks have no errors
COM ERR TwinSAFE-Out
FB-In
Standard-Out
TRUE: At least one TwinSAFE connection of TwinSAFE group
has an error
FALSE: All TwinSAFE connections of the TwinSAFE group have
no errors
OUT ERR TwinSAFE-Out
FB-In
Standard-Out
Always FALSE, since the EL6930 has no local outputs