4 Wiring with
4.5 Counter
Operating instructions 05/10 MN05013003Z-EN www.eaton.com 99
4.5.1.4 Example: up/down counting with a scan for actual value = zero
The input I6 contains the necessary counter information and controls the
count coil CC6 of counter 6. Marker N2 is set if the setpoint is reached.
Marker N2 controls the direction coil DC6 of counter C6. If N2 is 1 (activated),
counter C6 counts down. If the actual value of the counter is 00000, the
analog value comparator A6 resets mark N2. The direction coil DC6 of
counter C6 is switched off. Counter C6 only operates as an up counter.
4.5.1.5 Example: counter with retentive actual value
Select a retentive counter if you wish to retain the actual value of a counter,
even after a power failure or a change from RUN to STOP.
▶ Select the required counter in the SYSTEM... → RETENTION… menu.
The example shows the counters C5 to C7 as retentive counters.
The counter has the value 450 before the power supply is switched off.
Figure 55: Retentive counter
a The numerical value 450 is retained even after a power outage.
U = supply voltage of the device
Circuit diagram display Parameter settings of the counter C6
Parameter settings of the analog value comparator A6
￫
The above example scans the value zero. However, any
permissible value within the range of the analog value
comparator function block can be entered.
I6-------CC6
C6-------SN2
N2-------DC6
A6-N2----RN2
A6 EQ +
I1 C6 Æ
F1 +0
I2 0000 æ
F2 +0
OS +0
HY +0
M 9 - M12 Æ
M13 - M16
N 9 - N16
C 5 - C 7 åæ
C 8
C13 - C16
T 7
T 8
T13 - T16
D 1 - D 8
Circuit diagram display Parameter settings of the counter C5
I6-------CC5
C5-------ÄQ3
I8-Q3----RC5
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