SMC Networks Thermo-con HEF002-A6 User manual

PRODUCT NAME
Air cooled Thermo-con (Compact type)
MODEL / Series / Product Number
HEF002-A6
Serial Communication
Manual
DOC1009224
Keep available whenever necessary.
This manual is copyrighted and all rights
are reserved by SMC
Corporation, and may not, in whole or in part, be copied,
photocopied or translated without prior written consent of SMC.

History
HEF002-A6 i
History
Version Preface Contents Chap.1 Chap.2 Chap.3 Chap.4
1.0 Jul/7/22 Jul/7/22 Jul/7/22 Jul/7/22 Jul/7/22 Jul/7/22
Record of Changes
Version Contents Date
1.0 First edition Jul/7/22

Preface
ii HEF002-A6
Preface
Thank you very much for purchasing SMC Thermo-con.
This manual contains description for communication protocol of this product for your full benefit from this
product.
Read the operation manual carefully before use of this product, and understand the outline of the
product and safety instructions well. Instructions in the categories, “Danger”, “Warning” and “Caution”,
are important for safety and must be duly followed.
Please contact the following for any question and unclear points regarding the Thermo-con.
SMC Corporation R&D Center
Product Development Division-6
Address: 4-2-2, KINUNODAI,TSUKUBAMIRAI-CITY , IBARAKI-KEN 300-2493, JAPAN
Phone:[phone]
Fax:[phone]
E-mail:[email protected]o.jp
Notice: The content of this manual can be revised without a previous notice.

Contents
HEF002-A6 iii
Contents
1 PREPARATION FOR COMMUNICATION ---------------------------------------- 1-1
2 OPTIONS OF COMMUNICATION METHOD ------------------------------------- 2-1
2.1 COMMUNICATION PROCEDURE -------------------------------------------------------------------------- 2-1
3 COMMUNICATION FORMAT -------------------------------------------------------- 3-1
3.1 TYPE OF MESSAGE ---------------------------------------------------------------------------------------- 3-1
3.2 CONTENT OF COMMUNICATION -------------------------------------------------------------------------- 3-1
3.3 COMPOSITION OF REQUIRED MESSAGE (FROM MASTER TO THE PRODUCT) --------------------- 3-2
3.4 COMPOSITION OF RESPONSE MESSAGE (FROM THE PRODUCT TO MASTER) -------------------- 3-3
3.5 EXPLANATION OF CODE ----------------------------------------------------------------------------------- 3-4
3.6 CAUTIONS FOR COMMUNICATION ----------------------------------------------------------------------- 3-6
3.7 COMMUNICATION EXAMPLE ------------------------------------------------------------------------------ 3-7
3.8 CONNECTION ----------------------------------------------------------------------------------------------- 3-9
3.9 IDENTIFICATION CODE LIST ------------------------------------------------------------------------------ 3-9
3.10 ASCII CODE LIST --------------------------------------------------------------------------------------- 3-9
4 TROUBLESHOOTING ------------------------------------------------------------------ 4-1

Preparation for Communication
HEF002-A6 1-1
1 Preparation for Communication
Make preparation for using communication facility as follows.
1) Turn off the power switch of Thermo-con. (Detach the communication connector when the power
switch of the thermo-con is turning off.)
2) Connect communication cable to communication connector (RS-485 or RS-232C) of Thermo-con.
･Use twist pair shield cable as communication cable.
･Connect the host and thermo-con with the cross cable for RS-232C and the straight cable for RS-485.
･Connect shielded cable of communication cable to communication connector and drop it to FG(frame
ground).
･Connection drawing for communication is shown in the Figures 1-1, Figures 1-2.
･Length of communication cable for RS-485 shall be limited to around 500[m] in total, and that for RS-
232C shall be 15[m].
･If communication cable for RS-485 is longer, connect terminating resistance (220Ω,1/2W) to each +
and - terminal of the host computer and the farthest Thermo-con.
3) Turn on the power switch of Thermo-con.
4) Set the communication method (page 2-1) for all Thermo-con connected. (Refer the operation manual
(DOC1003077) how to set the communication method parameters.)
5) That’s all for preparation of communication. Then if a communication command from the host
computer is given, each Thermo-con will respond.
Figure1-2 Communication Connection (RS-232C)
Host Computer
RS-232C
Symbol
FG
RD
SD
SG
Thermo-con
RS-232C
RS
CS Short
Pin No.
Connector
shell
2
3
5
Symbol
FG
RD
SD
SG
Figure1-1 Communication Connection (RS-485)
Host Computer
RS-485
Thermo-con No.1
RS-485
Thermo-con No.2
RS-485
Thermo-con No.3
RS-485
Internal connection
Terminating
resistance
220Ω1/2W
Terminating
resistance
220Ω1/2W
Internal connection Internal connection
Pin No.
Connector
shell
1
2
5
FG
+
-
SG
SymbolPin No.
Connector
shell
1
2
5
FG
+
-
SG
SymbolPin No.
Connector
shell
1
2
5
FG
+
-
SG
Symbol
Pin No.
Connector
shell
1
2
5
FG
+
-
SG
Symbol Pin No.
Connector
shell
1
2
5
FG
+
-
SG
Symbol Pin No.
Connector
shell
1
2
5
FG
+
-
SG
Symbol
Symbol
FG
+
-
SG
Thermo-con No.16
9 9 9
9 9 9

Specifications of Communication Method
HEF002-A6 2-1
2 Options of Communication Method
Standards･････････････････････････････････････
Circuit type･･･････････････････････････････････
Communication type･･･････････････････････････
Communication speed･･････････････････････････
Character code････････････････････････････････
Parity･････････････････････････････････････････
Start bit･･････････････････････････････････････
Data length･･･････････････････････････････････
Stop bit･･･････････････････････････････････････
BCC check･･･････････････････････････････････
Address･･･････････････････････････････････････
RS-485, RS-232C
Half duplex
Asynchronous
2400,4800,9600,19200, 38400 bps
ASCII
None, even number, odd number
1 bit
7 bit, 8 bit.
1 bit, 2 bit.
Disable, Enable
1 to 99
Note: Values underlined indicate default values.
It is set to these values when delivered.
2.1 Communication Procedure
This product receives a “request message” from the master computer and sends
back a corresponding “response message”. It does not send a message firstly.
Response delay time setting Required interval
Time required for sending/receiving
Master
This product
From master
0 to 250ms
1ms or more
Request
message
Response
message
From the product
From master From the product
Response
message
Request
message