ZD340_07d_e.doc / Apr-17
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4.3. Differential Mode (Encoder 1 – Encoder 2): F07.062 = 2
Both inputs encoder 1 and encoder 2 are active. From both values the unit forms the difference,
with consideration of the individual encoder scaling factors.
Where the encoder signal also provides direction information, this information will be
considered by a corresponding sign of the count. Without direction information (channel A only)
encoder 1 will increment and encoder 2 will decrement the counter. The final result can once
more be scaled into user-friendly engineering units by means of the special scaling parameters
in parameter group F07.
Besides the actual counter value and the difference, the unit also records minimum and
maximum values of the difference.
Presets K1 and K2 are related to the actual counter value of encoder 1 only.
Presets K3 and K4 are related to the actual differential result (encoder 1 - encoder 2)
Display
L1 (red)
L2 (yellow)
1
Actual difference encoder 1 - encoder 2
--
--
2
Minimum value of the difference (since last reset)
blinking fast
--
3
Maximum value of the difference (since last reset)
--
blinking fast
4
Actual counter value of encoder 1 alone
blinking slow
--
5
Actual counter value of encoder 2 alone
--
blinking slow
Encoder 1
1 2 3 4 5 6
Cont.1
Cont.4
Encoder 2
Reset, Preset, Inhibit etc.
Difference of
two event counts
+
-
Encoder 1
1 2 3 4 5 6
Encoder 2
Difference of
two positions
Cont.1
C ont.4
Reset, Preset, Inhibit etc.
s1
s2
d
Gap w idth d = s1 - s2
