Rockwell Automation 1752-L24BBBE SmartGuard 600 Controllers User Manual - Manual (Page 240)

240 Rockwell Automation Publication 1752-UM001E-EN-P - June 2014
Appendix D Function Blocks Command Reference
Muting Function Block Fault Present Output Setting
The Fault Present output can also be used in programming. To enable this
output, check the Use Fault Present checkbox on the In/Out Setting tab of the
Function Block Properties dialog box.
Muting Function Block Error Handling
Use this table to diagnose and reset error conditions in the Muting function
block.
Muting Function Details
The Muting Function Block reset, start, and stop conditions are described in the
following sections.
Reset Conditions
The safety output (Output Enable) is on when all of the following conditions are
met:
• The light curtain signal is active (light incident).
• A discrepancy error has not occurred.
Start Conditions
If the muting sensors meet the following conditions while the Output Enable
signal is on, muting is applied, and the muting signal turns on:
• the muting sensors are all off.
Table 29 - Error Detection and Reset for Muting Function Block
Error Condition Status When an Error Occurs To Reset the Error Condition
Output Enable Fault
Present
Error Output
(3)
Synchronization Error
(between Muting Signal 11 and Muting
Signal 12 or between Muting Signal 21
and Muting Signal 22)
(1)
ON
(2)
OFF
(2)
Synchronization Error: ON Apply muting again or change the controller’s operating mode to Idle and
then back to Run mode.
Sequence Error Sequence Error: ON
Discrepancy Error (AOPD) OFF
(safety state) ON Discrepancy Error (AOPD):
ON Reset when both light curtain input signals change from inactive to active
status or you change the controller’s operating mode to Idle and then
back to Run mode.
Discrepancy Error (Override) Discrepancy Error (Override):
ON Reset when both override input signals change from inactive to active
status or you change the controller’s operating mode to Idle and then
back to Run mode.
(1) This error is detected only when the muting mode is configured as Sequential muting (both directions).
(2) If the light curtain goes from this error status to inactive (no light), the Output Enable signal will turn off and the Fault Present signal will turn on. If the light curtain becomes active (light incident) or the
override function is executed, the Output Enable signal will turn on and the Fault Present signal will turn off.
(3) If more than one error occurs, errors will be indicated at all affected error outputs.