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Programming wiring
MN05013005E
186
NOT Boolean operation
The NOT operation operates according to the following rules:
>I1
, positive value
Negate value of
>I1
and subtract 1:
–|
>I1
| – 1 =
>I2
>I1
, Negative value
Value of
>I1
and subtract 1:
|
>I1
| – 1 =
>I2
Counters
EZD provides 32 up/down counters from C 01 to C 32. The
counter relays allow you to count events. You can enter upper
and lower threshold values as comparison values. The
contacts will switch according to the actual value. To specify
a start value, for example, counting from the value 1200, this
can be implemented using a “C ..” counter.
The “C..” counters are cycle time dependent.
Wiring of a counter
You integrate a counter into your circuit in the form of a
contact and coil. The counter relay has different coils and
contacts.
Value
>I1
: 13219
dec
=
00000000000000000011001110100011
bin
Value
>I2
: Omitted
Result QV>: –13220
dec
=
11111111111111111100110001011100
bin
J
To prevent unpredictable switching states, use each coil of
a relay once only in the circuit diagram.
