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HRX-OM-S010
Chapter 5 Simple communication protocol function
5.5
Message configuration
HRS100/150 Series
5-12
5.5 Message configuration
The message
configuration
is shown in the following. The explanation of
data in message is shown in the Table 5.5-1.
This product communicates in ASCII mode. ASCII mode is used from STX
to ETX. Hexadecimal value is used for BCC.
5.5.1
Message format
1) Request message format
1-1) Request message (Request to read)
STX
Slave Address
Request
Command
ETX
BCC
[STX]
XX
XX
[R]
XX
XX
XX
[ETX]
XX
1-2) Request message (Request to write)
STX
Slave Address
Request
Command
Writing data
ETX
BCC
[STX]
XX
XX
[W]
XX
XX
XX
XX
XX
XX
XX
XX
[ETX]
XX
1-3) Request message (Request to store the data
)
STX
Slave Address
Request
Command
ETX
BCC
[STX]
XX
XX
[W]
XX
XX
XX
[ETX]
XX
2) Response message format
2-1) Response message (Normal response to request to write)
STX
Slave Address
ACK
Command
Reading data
ETX
BCC
[STX]
XX
XX
[ACK]
XX
XX
XX
XX
XX
XX
XX
XX
[ETX]
XX
2-2) Response message (Normal response to request to write or store the data)
STX
Slave Address
ACK
ETX
BCC
[STX]
XX
XX
[ACK]
[ETX]
XX
2-3) Response message (Response when a receiving error occurred)
STX
Slave Address
NAK
ETX
BCC
[STX]
XX
XX
[NAK]
XX
[ETX]
XX
Response is not returned unless STX and ETX (BCC) are included in the request. This product clears all
previously received code when STX is received.
Exception code