LG GLOFA-GM Series User Manual page 179

Chapter 7 Communication function
Error code is HEX and 2 bytes(ASCII code, 4 bytes), which indicates type of error. For the details, see
Appendix 'B. Error Code Table'.
4) Example of use
In case "HFF" is written in %MW230 address of station No.1.
(Computer request format)
Format
Header
Name
Frame (Ex.) ENQ
ASCII value H05
(For PLC ACK response after execution of command)
Format
Header
Name
Frame (Ex.) ACK
ASCII value
(For PLC NAK response after execution of command)
Format
Header
Name
Frame (Ex.) NAK
ASCII value H15
Station Command
Command
No. type
H01 W(w) SS
H3031 H57(77) H5353
Station No.
H01
H06 H3031
Station No. Command
H01
H3031
Number Variable name
of blocks length
H01 H06
H254D5732
H3031 H3036
Command Command type
W(w) SS
H57(77) H5353
Command type
W(w) SS
H57(77) H5353
7-60
Variable
data Tail
name
%MW230 H00FF EOT
H30304646 H04
3330
Tail
ETX
H03
Error code Tail
Error code(2) ETX
Error code(4) H03
Frame
check
BCC
Frame
check
BCC
Frame
check
BCC