Logic For Error Acknowledgment - Festo CAMC-G-S3 Manual

2 Product description of safety module CAMC-G-S3
2.8.3

Logic for error acknowledgment

The "Error acknowledgment" function described here resets errors which have occurred.
This is the precondition for a restart after errors.
Errors can be acknowledged via a rising edge of the VIN_ERR_QUIT control signal. For this, the control
signal must be connected to a digital input.
Configuration takes place in the same manner as configuration of the request or the restart of a safety
function. Please switch a control port to VIN_ERR_QUIT and confirm the input so the safety module
exits the error status.
In the delivery status and after a reset to factory settings, the input DIN48 is intended for
the "Error acknowledgment" function. Errors are acknowledged with the rising edge
(0 V -> 24 V).
An error can only be acknowledged (removed from the "temporary" diagnostic memory of the safety
module) when the error condition no longer exists. Thus, during acknowledgement, the safety module
systematically checks all the error conditions and deletes the entries of the errors which have been
eliminated. The remaining errors remain intact. After an acknowledgement operation, the safety mod­
ule writes an "Error acknowledgment" entry to the "permanent" memory of the basic unit. After the end
of error acknowledgement, any errors which still exist are entered in the diagnostic memory again.
At the end of error acknowledgment in the safety module, the module sends an "Acknowledge error"
command to the basic unit so that pending errors in the basic unit can also be acknowledged.
This means that the safety module has a master function for the acknowledgement of
errors.
– Errors acknowledged in the safety module are also acknowledged in the basic unit.
– Error numbers generated by the safety module (53-x to 59-x) can only be acknow­
ledged via the safety module.
– During error acknowledgement, the basic unit can only acknowledge those error num­
bers via the functional controller or I/O which are also generated by the basic unit.
Errors of the safety module are only acknowledged by the control port configured for this.
Time delays LIN_D48 to ...
VIN_ERR_QUIT up to the deletion of the temporary dia­
gnostic memory and change of the operating mode
VIN_ERR_QUIT up to the deletion of the errors in the basic
unit and ready status of the basic unit
Tab. 2.72 Runtime performance of error acknowledgment
118
Minimum Maximum
4.0 ms 20 ms
20 ms 500 ms
Festo – GDCP-CAMC-G-S3-EN – 1406NH – English
Typical
10 ms
100 ms