IDEC MicroSmart Pentra - Manual (Page 57)

D EVICE A LLOCATION OF PID M ODULE
5-16 FC5A MicroS mart PID Module User’s Manual FC9Y-B1283
0 1 3 2 9 0 2 1 9
Example 6: 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.
Notes:
• The PID module executes all steps 0 to 9 even if the times of steps are zero. When the program control is terminated,
nine is stored in the current step number of block 0.
• When hold program control is selected as the program end action, the program control is held, and the fixed value
control is performed with the parameters of step 9 after all steps are executed.
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
20 min
The program control is held at the ten
minutes of remaining time, and the
fixed value control is performed with
the current parameters.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
20 min
The program control is proceeded to the start of
step 3, and the fixed value control is performed
with the parameters of step 3.
The fixed value control is performed
with the parameters of step 9.
The program hold is canceled, and
the program control is started from
the start of Step 0.
After all steps are executed, the program
control is held, and the fixed value control
is performed with the parameters of step 9.