Task
Selection of how two or more digital channels can be combined with each other
“Addition/subtraction”: For impulse counters.
“Sum/averages”: Of impulse counters or operational time counters.
“Logical combination: For on/off events.
Hint:
Only the channels that could be combined can be selected. All combinations
are handled in the same way as real signals, this means that they are updated every
second, can be monitored for alarm set point infringements and be allocated to
groups etc.
Formula
Description of the combination. Cannot be changed (for information only).
Sum of
Selection if impulse counters or operation time counters are to be combined. Only
possible when “Sum/average value” are to be created.
Channel identifier
Expansion (or description of the combination created in this channel).
Function “g”
Selection if the average or sum is to be calculated from channels “y1" to ”y2". Only
possible when “Sum/average value” are to be created.
Input “y1"
Input ‘y1’, that is to be combined with another input.
Hint: Other combinations can also be used so long as their number is smaller than the
actual combination. So e.g. combination 1 can be used in combination 2
(“Cascading”).
Factor “a”
Factor ‘a’, with which the value of signal ‘y1’ is multiplied.
Factory default: 1.
Combination “?”
Addition/subtraction:
“Not used”: Switches part 2 of the formula y2*b) off.
Logical combination:
“AND”: Both inputs must be in the prescribed condition in order to be recognised as
logically true (“H”). “OR”: It is enough if one of the two inputs is in the prescribed
condition.
Input “y2"
See input‘y1’
Factor “b”
Addition/subtraction:
Factor ‘b’, with which the value of signal ‘y2’ is multiplied.
Sum/average:
Factor, with which the sum or average of channels “y1" to ”y2" are multiplied.
5. Set-up unit
83
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