HRX-OM-S010
Chapter 5 Simple communication protocol function
HRS100/150 Series
5.4
Communication sequence
5-11
5.4 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/writes return a positive response.
.
●Negative response
Returns a negative message when the
received request message is not normal.
Refer to “5.9 Negative response’’.
●No response
No response is returned when the slave
address is specified or a command which
is not supported is received.
Customer's equipment side
（
Master
）
Thermo-chiller side
（
Slave
）
Request message
Positive res
ponse
Request message
Negative re
sponse
Request message
No response
0 to 250ms
（
Response
delay time
）
（
Negative me
ssage
）
（
Negative me
ssage
）
10 to 200ms
