HRX-OM-W004
Chapter 3 Serial communication
HRR Series 3.7
Communication sequence
3-7
Communication speed
6. Press the [▼] key. Displays screen for setting the communication speed.
Selects the communication speed.
Set value Contents
Initial value
9.6
9600 bps
―
19.2
19200 bps
○
3.7 Communication sequence
Starts with a request message from the customer’s system (host), and
finishes with a response message from the product (slave). This product
operates as a slave. It does not send any requests.
●
Positive response
Based on the request message, reads
register/writes register and returns a positive
response.
●
Negative response
Returns a negative message when the
received request message is not normal. Refer
to ‘’3.12 Negative response’’.
●
No response
No response is returned when there is an error in
“slave address specification” or”
Checksum(LRC
/ CRC)
”.
Communication speed
Customer's system
(host)
This product
(slave)
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No response
10～200ms
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（
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