Publication 1752-UM001A-EN-P - October 2006
Function Blocks Command Reference 167
The Safety Gate Monitoring function monitors the status of a safety
gate, using input signals from a safety door switch or safety limit
switch connected to the door. The Output Enable signal turns on if the
inputs from the switch being monitored are active. The Output Enable
signal turns off if the inputs become inactive or if an error is detected
for that function block.
Safety Gate Monitoring Function Block Optional Outputs
Optional outputs may also be used in programming. To display these
optional outputs, check the appropriate checkbox on the Out point
tab of the Function Block Properties dialog in the Logic Editor of
RSNetWorx for DeviceNet software.
• Discrepancy Error Pair 1
• Discrepancy Error Pair 2
• Function Test Required Signal
• Sychronization Error
• Function Test Error
Safety Gate Monitoring Function Block Fault Present Output
Setting
The Fault Present output can also be used in programming. To enable
this output, check the Fault Present checkbox on the Out point tab of
the Function Block Properties dialog.
Safety Gate Monitoring Function Block Function Tests
For some safety gate applications, such as Category 2, safeguarding
devices require physical verification that the gate continues to operate
properly.
If the function test is enabled for the Safety Gate Monitoring function
block, a safety gate test, in which the safety gate must be physically
opened and closed again, can be added as a condition for turning on
the Output Enable signal.
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