Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 194)

Publication 1760-UM002B-EN-P - March 2005
4-84 Wiring with Pico GFX-70
9. contact (make contact) CH..OF upper setpoint value reached, exceeded
10. contact (make contact) CH..FB lower setpoint value reached, undershot
11. contact (make contact) CH..ZE actual value equal to zero
12. out of value range
• Range A:
– The counter has the value zero.
– The contacts CH..ZE (actual value equal to zero) and CH..FB (lower
setpoint value undershot) are active.
– The counter receives counter values and increases the actual value.
– CH..ZE drops out as well as CH..FB after the lower setpoint value is
reached.
• Range B:
– The counter counts upwards and reaches the upper setpoint value.
The contact “upper setpoint value” CH..OF becomes active.
• Range C:
– The coil CH..SE is briefly actuated and the actual value is set to the
preset actual value. The contacts go to the respective position.
• Range D:
– The counting direction coil CH..D is actuated. If counting pulses are
present, downward count is initiated.
– If the lower setpoint value is undershot, the contact CH..FB becomes
active.
• Range E:
– The reset coil CH..RE is activated. The actual value is set to zero.
– The contact CH..ZE is active.
• Range F:
– The actual value goes outside the value range of the counter.
– The contacts become active according to the direction of the values
(positive or negative).