JUMO LOGOSCREEN 550 cf, Operating Manual

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2 Device description
22
Logic module You also have up to 6 channels available as logic channels.
As is the case with all the other digital signals, the calculated digital (Boolean)
values can be used for different functions:
- recording in the event traces,
- as a control signal for display switch-off,
- clock time synchronization,
- operating time counter,
- externally controlled counters / integrators
- counter/integr. reset
- event operation and key inhibit,
- for output to a relay and
- as count input for a counter.
The following variables are used for the formulae:
- binary inputs
- logic channels
- alarms
- errors
- Modbus flag (signal via interface)
- TRUE
- FALSE
- device-specific data (only after consultation with the manufacturer)
These functions can be used for the formulae:
- ! (NOT)
- & (AND)
- | (OR)
- ^ (XOR)
- / (rising edge)
- \ (falling edge)
- ( (open bracket)
- ) (close bracket)
H
For further information, refer to
Chapter 5.9 “Math/logic”