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Software Section
<Standard loader>
Input terminal name
Read request
Communication unit No.
Communication channel No.
Destination station No.
Variable specification method
Target variable to access
Read data size
Read data
V1
REQ
WV2
MODULE_NO
WV3
CHANNEL_NO
DV4
STATION_NO
WV5
VAR_TYPE
_V6
REMOTE_VAR
WV7
SIZE
_V8
RD
R_READ
V9
DONE
V10
ERROR
WV11
STATUS
_V6
REMOTE_VAR
_V8
RD
S-20
Output terminal name
Read end
Read error
Status
Target variable to access
Read data
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