HRX-OM-M091
Chapter 4 MODBUS communication function
HRS Series
4.4 Communication sequence
4-7
4.4 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 ‘’4.9
Negative response’’.
●
No response
No response is returned when there is an error in
“slave address specification” or ”LRC”.
Customer's system
(host)
This product
(slave)
Request message
Positive respo
nse
Request message
Negative resp
onse
Request message
No response
10
~
200ms
(
Response me
ssage
)
(
Response me
ssage
)
Содержание HRS012-W
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