Delta MS300 Series User Manual page 686

Explanation of basic structure of ladder diagrams
LD (LDI) command: An LD or LDI command appears at the start of a block.
1.
LDP and LDF use this command structure, but there are differences in their action state. LDP,
LDF only act at the rising or falling edge of a conducting contact (see diagram below).
AND (ANI) command: a series configuration in which a single device is connected with one
2.
device or a block.
ANDP, ANDF use this structure, but their action occurs at the rising and falling edge of a
conducting contact.
OR (ORI) command: a single device is connected with one device or a block.
3.
ORP, ORF use this structure, but their action occurs at the rising and falling edge a conduction
contact.
ANB command: a configuration in which one block is in series with one device or block.
4.
Chapter 16 PLC Function ApplicationsMS300
Figure 16-29
Figure 16-30
Figure 16-31
Figure 16-32
Figure 16-33
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