Omron SYSMAC CS Series Operation Manual page 277

How to Use the Step Ladder Program Block
List of Basic Instructions
Command Ladder
symbol
Input LOAD
type
LOAD NOT
AND
AND NOT
OR
OR NOT
AND LOAD
Circuit block
OR LOAD
Circuit block
Circuit block
Operand
Read source Indicates a logical start of the
block logic block, creates an ON/
address/ OFF execution condition
based on the ON/OFF status
ITEM number
of the contact, and connects
to the next stage.
Read source Indicates a logical start of the
block logic block, creates an ON/
address/ OFF execution condition
based on the reverse of the
ITEM number
ON/OFF status of the contact,
and connects to the next
stage.
Read source Takes a logical AND of the
block status of the contact and the
address/ current execution condition.
ITEM number
Read source Reverses the status of the
block contact and takes a logical
address/ AND with the current execu-
tion condition.
ITEM number
Read source Takes a logical OR of the sta-
block tus of the contact and the cur-
address/ rent execution condition.
ITEM number
Read source Reverses the status of the
block contact and takes a logical
address/ OR with the current execution
condition.
ITEM number
000000 (fixed) Takes a logical AND between
Circuit block
circuit blocks.
000000 (fixed) Takes a logical OR between
circuit blocks.
Description Input
conditions
Not
required
Not
required
Required
Required
Required
Required
Required
(2 or more)
Required
(2 or more)
Appendix A
°:Can be used
×:Cannot be used
In logic In step
sequence sequence
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