IDEC MicroSmart Pentra User Manual
Page 55
D
EVICE
A
LLOCATION OF
PID
M
ODULE
5-14
FC5A MicroS
mart PID Module User’s Manual FC9Y-B1283
0
1
9
2
0
1
2
1
1
2
9
Example 4: Hold Program Control when Program Ends
The following diagram shows an example of the program control when hold program control is selected as
the program end action.
Time of steps: Step 0 and 1: 60 minutes, Step 2: 30 minutes, Steps 3 to 9: 0 minute
In this example, D1000 is allocated to the control register and M500 is allocated to control relay.
Note: The PID module executes all steps 0 to 9 even if the step times of steps are zero. When the program control is
terminated, nine is stored in the current step number of block 0.
Current step number
D1006
Control enable bit
D1022.0
Program control bit
D1022.3
Program control bit
(Monitor)
D1009.3
Program hold bit
D1022.4
Advance next step bit
D1022.6
Advance previous step bit
D1022.7
Program end output
D1010.6
30 min
30 min
20 min
After all steps are executed, the program
control is held, and the fixed value control
is performed with the parameters of step 9.
The program hold is canceled
by executing advance next step,
and the program control is
started from the start of step 0.
The program control is held at the 30 minutes
of remaining time, and the fixed value control
is performed with the current parameters.
The program hold is canceled, and
the program control is started from
30 minutes of remaining time.
The program control is started from the
start of step 2.
After all steps are executed, the program control is
held, and the fixed value control is performed with
the parameters of step 9.
While the program hold is maintained at the
end of the program control, the program hold bit
and advance previous step bit have no effect.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF