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How to Use the Step Ladder Program Block
Appendix 1
212
To receive data internally by the Step Ladder Program without outputting it to the block address and ITEM
number, specify the Internal Switch block (Block Model 209) as the block address.
Example
ITEM
Command
Command code
Operand
011
LOAD
01
001013 (block address, ITEM number)
012
OUT
07
100011 (block address of internal switch, ITEM number)
013
LOAD
01
100011 (block address of internal switch, ITEM number)
014
OUT
07
001012 (block address, ITEM number)
100-011 (internal switch) turns ON by 001-013
turning ON.
001-012 turns ON by 100-011 (internal switch)
turning ON.
001-013
100-011
100-011
001-012
Relay accepted by
internal switch
To input constantly ON or constantly OFF contacts or clock pulse contacts, specify state outputs for
sequence control (ITEM020 to ITEM028) in the System Common block (Block Model 000) as the block
address.
Example
Command
Command code
Operand
LOAD
01
000021 (constantly ON)
OUT
07
001086 (block address, ITEM number)
LOAD
01
000023 (1sec clock)
OUT
07
(block address, ITEM number)
001=086 are ON (auto) at all times by
constantly ON contact 000-021.
100-08 turns ON and OFF every 1s by 1s
clock 000-023.
000-021
001-086
000-023
100-08
Auto/Manual switching
1s clock
ON at all times
Operating conditions for the Step Ladder Program block
The operating conditions for the Step Ladder Program block vary according to the startup mode of ITEM006.
You can specify one of the following:
Operation at all times
When S1 turns ON
Note
The Step Ladder Program can be started up from other Step Ladder Program blocks by BLOCK
SET.