Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 200)

Publication 1760-UM002B-EN-P - March 2005
4-90 Wiring with Pico GFX-70
7: accept preset actual value, coil CI..EN
8: reset coil CI..RE
9: contact (make contact) CI..OF upper setpoint value reached, exceeded
10:contact (make contact) CI..FB lower setpoint value reached, undershot
11:contact (make contact) CI..ZE actual value equal to zero
12:contact (make contact) CI..CY value range exceeded or undershot
• Range A:
– The counter counts upwards.
– The value leaves the lower threshold value and reaches the upper
value.
• Range B:
– The count direction changes to a downward count.
– The contacts switch in accordance with the actual value.
• Range C:
– The enable signal is set to 0. The actual value becomes 0.
• Range D:
– The rising edge on the accept preset value coil sets the actual value to
the preset value.
• Range E:
– The reset pulse sets the actual value to zero.
• 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).
Comparators
Comparator function blocks allow you to compare constants and variables
with one another.
The following comparisons are possible:
Function block input Function block input
>I1
Greater than
>I2
Equal to
Less than