Eaton easyE4 series Manual page 239

6. Function blocks
6.1 Manufacturer function blocks
1: One of the I01 through I04 device inputs
2: Upper threshold value SH.
3: Start value SV.
4: Lower threshold value SL.
5: Count direction, coil CH...D
6: Transfer start value, coil CH..SE.
7: Reset coil CH...RE
8: Contact (N/O) CH..OF: Upper limit threshold reached or exceeded.
9: Contact (N/O) CH..FB: Lower threshold value reached or undershot.
10: CH..ZE = 1, if actual value is zero.
11: CH..CY = 1, if the value is out of range
• Range A:
– The counter range has the value zero.
– The contacts CH..ZE (actual value equal to zero) and CH..FB (lower threshold value undershot) are act-
ive.
– The counter receives pulses and increases the actual value.
– CH..ZE drops out as well as CH..FB after the lower threshold value is reached.
• Range B:
– The counter relay counts upwards and reaches the upper threshold value.
The contact "upper threshold value" CH...OF becomes active.
• Range C:
– The coil CH..SE is briefly actuated and the actual value is set to the start value.
The contacts go to the respective position.
• Range D:
– The counting direction coil CH..D_ is actuated. If counting pulses are present, downward counting is
initiated.
– If the lower threshold value is undershot, the contact CH..FB becomes active.
• Range E:
– The reset coil CH..RE is activated. The actual value will be set to zero.
– The contact CH...ZE is active.
• Range F:
– The actual value goes outside the value range of the counter relay.
– The contacts OF, FB, ZE become active according to the direction of the values (positive or negative).
Retention
Counter relays can be operated with retentive actual values. You can select the number
of retentive counter relays in Project view/System settings tab, please refer to System
settings tab. The retentive ACTUAL value will require 4 bytes of memory space. If a
counter relay is retentive, the actual value will be retained when the operating mode
switches from RUN to STOP and when the power supply is switched off. If the device is
started in RUN mode, the counter relay will continue to work with the non-volatile
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