Rockwell Automation 1760-xxxx Pico GFX-70 Controllers User Manual - Manual (Page 239)

Publication 1760-UM002B-EN-P - March 2005
Wiring with Pico GFX-70 4-129
Example 6:
Input value >I1: 2147483647
dec
BCD binary value: 01111111111111111111111111111111
Hexadecimal value: 01111111111111111111111111111111
Decimal value QV>: 161061273
Operating Hours Counter
Pico GFX-70 provides 4 independent operating hours counters. The counter
states are retained even when the device is switched off. As long as the enable
coil of the operating hours counter is active, Pico GFX-70 counts the hours in
minute cycles.
Figure 4.55 Pico GFX-70 circuit diagram with operating hours counter.
Parameter display and parameter set for the operating hours counter function
block:
Contacts
OT01Q1 to OT04Q1
The contact switches when the upper threshold value has been reached
(greater than or equal to).
Coils
• OT01EN to OT04EN: enable coil
• OT01RE to OT04RE: reset coil
IMPORTANT
Values greater than 9999999 are output as 161061273.
Values less than -9 999999 are output as
-161061273. The working range of the function block has
been exceeded.
I 10-----------------------------[ OT01EN
M 42-----------------------------[ OT01RE
OT01Q1---------------------------[ Q 01
OT04 +
>I1
QV>
OT04 Operating hours counter number 04
+ Appears in the parameter display
>I1 Upper threshold value in hours
QV> Actual value of the operating hours counter