9. Program
59
9.5. Ladder Program
9.5.1. Ladder Program Function Configuration
ration of this program is as follows: The functional configu
Major
classification
Minor classification Description
1.Initialization 1.1 Response code clear
processing 1.2 Operand setting for
instruction
nd/rec
tting
Preparation for communications. The
area to be used is cleared and
initialization settings are performed. PMCR
1.3 Se eive symbol
se
2.PMCR
tion
cution
management
CR in
ecutin
MCR in
execution processing
mal/error detection
ns sequence (protocol
stered in the SCU Unit is
cuted. Whether the
operation ended normally or abnormally is
determined based on the related flags
and receive data.
instruc
exe
2.1 PM struction The communicatio
ex g macro data) regi
2.2 P struction identified and exe
2.3 Nor
processing
3.Normal end
state
management
3.1 Normal end processing
3.2 Response code setting
The normal completion flag is turned ON.
The response code which indicates the
normal end is set.
4.Error end 4.1 Error end processing
esponse code setting
The error end flag is turned ON.
The response code is set according to the state 4.2 R
management error cause.
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