Table of Contents
Advertisement
CompoWay/F Master Protocol
Command Frame Contents
Response Frame Contents
Item
STX
A code, 02 Hex, indicating the beginning of a communica-
tions frame (text). This code must always be set as the first
byte.
Node number
The node number identifies the source of the command
frame. Specify "XX" to broadcast a transmission. There
will be no response made to a broadcast.
Subaddress
Set "00" for most components. Other values must be set
for special components.
SID
Set "0" for most components. Other values must be set for
special components.
Command and text
The command and required text are placed here. Refer to
the command codes and text for individual sequences.
MRC and SRC
The command code specifies the service being used.
Refer to the command codes and text for individual
sequences.
ETX
A code, 03 Hex, indicating the end of text.
BCC
The block check character (horizontal parity, 1 byte). The
character is an exclusive OR of all data from just after the
STX to the ETX.
Item
STX
A code, 02 Hex, indicating the beginning of a communica-
tions frame (text). This code must always be set as the first
byte.
Node number
The node number identifies the source of the command
frame. "XX" is specified to broadcast a transmission.
There will be no response made to a broadcast.
Subaddress
"00" for most components. Other values must be set for
special components.
SID
"0" for most components. Other values must be set for
special components.
End code (See note.) The results of executing the command frame.
Note: The response code (MRES and SRES) indicates
the results for the command code; the end code indicates
the results for the command frame. These are not the
same.
Response and text
The response and requested text are placed here. Refer
to the response and text for individual sequences.
MRES and
The response code specifies the results of processing the
SRES
service requested by the command code. Refer to the
response codes and text for individual sequences.
ETX
A code, 03 Hex, indicating the end of text.
BCC
The block check character (horizontal parity, 1 byte). The
character is an exclusive OR of all data from just after the
STX to the ETX.
Appendix B
Meaning
Meaning
141
Advertisement
Chapters
Table of Contents
Troubleshooting
