Omron SYSMAC CS1W-LCB01 Operation Manual page 288

How to Use the Step Ladder Program Block
Example of Step Ladder Program
Start of
operation
000-019
Move
condition
a
Internal switch
A
Move
condition
b
Internal switch
B
Note A contact ITEM that has been turned ON by the OUT command stays ON even if program execution
moves to the next STEP. For this reason, care must be taken when using the OUT command when per-
forming step progression control. To turn OFF the contact ITEM, that has been turned ON by the OUT
command, by movement between STEPs, use the RESET command to reset the contact ITEM.
254
Declare STEP01.
STEP01
ITEM setting
102-039
S
Send all P1, I1 and D1 from ITEM Setting block at block
address 102 at start of operation.
Basic PID
001-086
S Set basic PID at block address 001 to Auto.
Internal switch
100-012
Turn pump setting ON.
R
Start of operation
000-019
Reset Run Start flag.
S
Internal switch
Move to next STEP02 when step move condition a turns
A
ON, and set internal switch A. (A remains ON even if
program execution moves to STEP01.)
STEP02 Declare STEP02.
ITEM setting
103-039
S Send all P2, I2 and D2 from ITEM Setting block at block
address 103 as internal switch A is ON when STEP02 is
moved to.
Internal switch
A
Reset internal switch A.
R
Internal switch
B
Move to next STEP03 when step move condition b turns
S ON, and set internal switch B. (A remains ON even if
program execution moves to STEP01.)
Declare STEP03.
STEP03
ITEM setting
104-039
S Send all P3, I3 and D3 from ITEM Setting block at block
address 104 as internal switch A is ON when STEP03 is
moved to.
Internal switch
100-012
R Turn pump OFF.
B
R
Reset internal switch B.
Appendix A