Omron SYSMAC CS Series Operation Manual page 230

Examples of Applied Control Types
Note
Example
198
MV
T
1
T
0
Function blocks used: ON/OFF Timer (Block Model 206)
Contact Distributor (Block Model 201)
(Step Ladder Program [Block Model 301] as neces-
sary)
Advanced PID
PV
Block Model 012
Contact Distributor
Block Model 201
ON/OFF Timer
Start of operation
Block Model 206
The contact signals from the ON/OFF Timer block are connected to the MV
hold input of the Advanced PID block.
In processes where the dead time changes according to certain conditions,
make the hold time variable according to those conditions. (PI control of vari-
able sample cycle). In this case, set the ON time (T1) of the ON/OFF timer by
other function blocks.
PID
MV
Reaction
process
T
1
T
0
MV
MV hold
ON/OFF operation
PV
Section 5-2
Time