LG GLOFA-GM Series User Manual page 164

Chapter 7 Communication function
4) Example of use
In case 1 WORD from %MW20 of station No.1 and 1 WORD from %QW0.2.1 address are read supposing that
data of H1234 is in %MW20 and data of H5678 is in %QW0.2.1.
(Computer request format)
Format
Station
Header
No.
Name
Frame(Ex) ENQ H01
ACSII value H05 H3031
(For PLC ACK response after execution of command)
Format
Station
Header
No.
Name
Frame(Ex.) ACK H01
ACSII value H06 H3031
(For PLC NAK response after execution of command)
Format
Station
Header
No.
Name
Frame(Ex.) NAK H01
ACSII value H15 H3031
Command Number of
Command
type blocks
R(r) SS H02
H52(72) H5353 H3032
Command Number of
Command
type blocks
R(r) SS H02
H52(72) H5353 H3032
Command
Command
type
R(r) SS
H52(72) H5353
7-45
Variable Variable
Variable name
Length length
H05 %MW20 H08
H3035 H254D573230 H3038
Variable Variable
Variable name
length length
H02 H1234 H02
H3032 H31323334 H3032
Error code
Error code(2)
Error code(4)
Frame
Variable name Tail
check
%QW0.2.1 EOT BCC
H255157302E
H04
322E31
Frame
Variable name Tail
check
H5678 ETX BCC
H35363738 H03
Frame
Tail
check
ETX BCC
H03