And Load: And Ld - Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual

Programmable controllers

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Sequence Input Instructions

AND LOAD: AND LD

Ladder Symbol

Applicable Program Areas

Index Registers

Indirect addressing using

Index Registers

OR NOT is used for a normally closed bit connected in parallel. A normally

closed bit is configured to form a logical OR with a logic block beginning with a

LOAD or LOAD NOT instruction (connected to the bus bar or at the beginning

of the logic block). If there is no immediate refreshing specification, the speci-

fied bit in I/O memory is read. If there is an immediate refreshing specification,

the status of the Basic Input Unit's input terminal is read.

There are no flags affected by this instruction.

Immediate refresh (!) can be specified for OR NOT. An immediate refresh

instruction updates the status of the input bit just before the instruction is exe-

cuted from a Basic Input Unit (but not Basic Input Units on Slave Racks or for

C200H Group 2 Multi-point Input Units).

Takes a logical AND between logic blocks.

Creates ON Each Cycle AND Result is ON

Immediate Refreshing Specification

Block program areas

OR NOT bit operand

,IR0 to ,IR15

–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15

DR0 to DR15, IR0 to IR15

,IR0+(++) to ,IR15+(++)

,–(– –)IR0 to, –(– –)IR15

Step program areas

Not supported.

Interrupt tasks

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