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Safety Device Function Blocks Section 3-5
3-5-9 Redundant Input
Basic Function Generic function block for two-input signal monitoring.
Diagram
General Description The Generic Two-input function block can be used for general-purpose moni-
toring of safety two-input sensors and switches.
The Enable Output signal turns ON when a monitored sensor or switch is acti-
vated, and it turns OFF when they are not active or when an error is detected
in the function block.
This function block and the set parameters are equivalent to those of the
Emergency Stop Switch Monitoring function block.
For details, refer to 3-5-3 Emergency Stop Pushbutton Monitoring (E-Stop).
3-5-10 Single Beam Safety Sensor Monitoring
Basic Function The Single Beam Safety Sensor function block monitors the input signal of an
OMRON E3ZS/E3FS Single-beam Safety Sensor.
Diagram
General Description The Single-beam Safety Sensor function block is used to monitor a single-
beam safety sensor. If the input from the single-beam safety sensor that is
being monitored is active, the Output Enable signal will turn ON. If the input is
not active or an error is detected (e.g., a short-circuit), the Output Enable sig-
nal will turn OFF.
Set Parameters There are no set parameters.
Timing Chart
3-5-11 Non-Contact Door Switch
Basic Function The Non-Contact Door Switch function block monitors the status of an
OMRON D40A or D40Z Non-contact Door Switch.
Default Maximum Number of Outputs
IDLE to RUN
Enable
Input
Output
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