LSIS XBE-DC08A, User Manual, Page: 1064 / 1284

Chapter 2 Built-in Cnet communication
2-66
B
u
ilt
-in
C
omm

XGB Response format (NAK response)
Format name Header Station No.
Command
Registration
No.
Error code
(Hex 2Byte)
Tail Frame check
Frame (Example)
NAK H10 X(x) H09 H1132 ETX BCC
ASCII value
H15 H3130 H58(78) H3039 H31313332 H03
Item Description
BCC
When command is one of lower case(x), only one lower byte of the value resulted by adding
1 Byte each to ASCII values from NAK to ETX is converted into ASCII and added to BCC,
and sent.
Error code
Hex and 2 bytes (ASCII code, 4 bytes) indicate error type. For the details, Refer to XGT
dedicated communication error codes and countermeasures.

Example
This example supposes that device M000 of station NO. 1 is monitor registered.
1) PC request format (PC
→
XGB)
Format name Header
Station
No.
Command
Registration
No.
Registration Format
Tail
Frame
check
R##
Number of
blocks
Device length Device name
Frame (Example)
ENQ H01 X(x) H01 RSS H01 H06 %MW000 EOT BCC
ASCII value
H05 H3031 H58(78) H3031
H5253
53
H3031 H3036
H2554573030
30
H04
2) For ACK response after execution of command (PC
←
XGB)
Format name Header Station No. Command Registration No. Tail Frame check
Frame (Example)
ACK H01 X(x) H01 ETX BCC
ASCII value
H06 H3031 H58(78) H3031 H03
3) For NAK response after execution of command (PC
←
XGB)
Format name Header Station No. Command Registration No. Error code Tail Frame check
Frame (Example)
NAK H01 X(x) H01 Error code (2) ETX BCC
ASCII value
H15 H3031 H58(78) H3031 Error code (4) H03