Ladder Logic Elements and Instructions

A Special STAT Instruction, Continued

Top Node

The reference number entered in the top node is the first position in the destination

Content

block–i.e., the block where the current words of interest from the status table will be

 

copied. The reference may be:

 

λ The first 0x reference in a block of contiguous discrete outputs

 

λ The first 4x reference in a block of contiguous holding registers

Bottom Node

 

The integer value entered in the bottom node specifies the number of registers or

Content

16-bit words in the destination block where the current status information will be

 

written.

 

The length–i.e., number of words–in the status table will vary depending on

 

whether or not I/OBus I/O is being supported:

 

λ Without I/OBus, the STAT instruction is 12 words long.

 

λ With I/OBus, the instruction is 20 words long.

 

 

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Schneider Electric Processor Adapter manual Top Node, Content, Bottom Node