SMC Networks HECR Series Communications Manual

Communication Format
3-3 HECR
(2) Confirming and reading
Host →
ENQ
COM
Check sum
CR
(H)
(L)
← Thermo-con
STX
COM
Data
ETX
Check sum
CR
10
1
10
0
10
-1
10
-2
(H)
(L)
Host →
ACK
CR
(Possible to omit)
<Specifying unit>
Host →
SOH
UT
ENQ
COM
Check sum
CR
(H)
(L)
← Thermo-con
SOH
UT
STX
COM
Data
ETX
Check sum
CR
10
1
10
0
10
-1
10
-2
(H)
(L)
Host →
ACK
CR
(Possible to omit)
･COM indicates communication command.
･UT indicates unit No. of each Thermo-con. Unit No. is the No. to identify each Thermo-cons when 2 or
more Thermo-cons are linked by communication. Set this No. within 0-F. (UT is the code adding 30H
to unit No. from 30H to 3FH.)
･As for symbols at communication, minus is indicated by “-“ (2DH by ASCII code) and plus is indicated
by “0” (30H by ASCII code).
･In case of setting temperature and offset with communication, data out of set range isn’t memorised. (If
communication format is correct, ACK returns.)
･When writing in FRAM is specified, changed data is memorized in FRAM each time. FRAM is changed
only when data is changed.

SMC Networks HECR Series Specifications

General

Brand	SMC Networks
Model	HECR Series
Category	Chiller
Language	English