Operate blocks and compare blocks
(Original Document)
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Introduction
The conversion replaces the PL7 ladder language elements with their Control Expert equivalent.
Operate blocks and compare blocks
The following table describes the correspondence and possible differences between PL7 and Control Expert ladder language graphic objects.
PL7
Graphical representation
Control Expert
Graphical representation
State
Operate block
Modified (1)
Horizontal compare block
Converted
Vertical compare block
EF
Modified (2)
Key:
(1)
A semi-colon is added to the end of the ST expression.
(2)
The operate block is replaced by an EF.