LG GLOFA-GM Series User Manual page 85

Programmable logic controller cnet i/f module
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Chapter 5 Frame Editor
[Figure 5.9] Processing of received data
Ext. communication
device
Header
transmission
Data
transmission
Tail
transmission
BCC
transmission
[Figure 5.10] shows the input result of CONST and ARRAY to frame segment in received frame for exercising.
[Figure 5.10] Input result for received frame
E) If segment input is completed, input [ETX] into tail and apply basic setting to [BCC] as below to complete
received frame input.
Cnet
Compare headers
X = 1
Compared with segment X
Is the segment type 'ARRAY' ?
If CONST,
If ARRAY,
compare the
transmit the
contents in data
same number of
items with the
byte set in the
received contents
item [Size] to RD1
if identical or not.
of RCV_MSG.
X = X + 1
Compare tails
compare BCCs
5-20
GLOFA CPU module
Length
transmission
data
transmission

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