SMC Networks THERMO-CON HEC001 Series,THERMO-CON HEC003 Series,THERMO-CON HEC012 Series,THERMO-CON HEC006 Series,THERMO-CON HEC002 Series Communications Manual

サーモコン

HEC002-A

THERMO-CON

Model No.

HEC001 series
HEC003 series
HEC012 series

HEC002 series
HEC006 series

Keep available whenever necessary.

A_HEC-OM-J017

Rev.May.2010

© 2006 SMC CORPORATION All Rights Reserved

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

HEC i

History

Version

Preface

Contents

Chap.1

Chap.2

Chap.3

Chap.4

Chap.5

Chap.6

1.0

1.1

Record of Changes

Version

Contents

Date

1.0

First edition

June.2006

1.1

The series name is added to the cover.The product photography of the
cover is deleted.

May.2010

Preface

HEC

ii

Preface

Thank you very much for purchasing SMC Thermo-con.

This manual contains description for communication 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:[e-mail]

Notice: The content of this manual can be revised without a previous notice.

CONTENTS

HEC iii

CONTENTS

Pages

1 Preparation for Communication ------------------------------------------------- 1-1

2 Specifications of Communication Method ----------------------------------- 2-1

3 Communication Format ------------------------------------------------------------- 3-1

3.1 Control code used for communication -------------------------------------------------------------- 3-1

3.2 Command code list --------------------------------------------------------------------------------------- 3-1

3.3 Communication procedures and format ------------------------------------------------------------ 3-2

3.4 Calculation of checksum -------------------------------------------------------------------------------- 3-3

4 Details of Communication format ----------------------------------------------- 4-1

4.1 Temperature setting (without writing EEPROM) -------------------------------------------------- 4-1

4.2 Reading setting temperature --------------------------------------------------------------------------- 4-1

4.3 Reading internal sensor --------------------------------------------------------------------------------- 4-2

4.4 Reading external sensor -------------------------------------------------------------------------------- 4-3

4.5 Reading alarm status ------------------------------------------------------------------------------------ 4-3

4.6 Reading temperature average data ------------------------------------------------------------------ 4-5

4.7 Offset setting (without writing EEPROM) ----------------------------------------------------------- 4-5

4.8 Reading offset --------------------------------------------------------------------------------------------- 4-5

4.9 Temperature setting (with writing EEPROM) ------------------------------------------------------ 4-6

4.10 Offset setting (with writing EEPROM) --------------------------------------------------------------- 4-7

5 Troubleshooting ----------------------------------------------------------------------- 5-1

6 Communication Format and

Examples of Answers from Thermo-con -------------------------------- 6-1

Preparation for Communication

HEC 1-1

1 Preparation for Communication

Make preparation for using communication facility as follows.

1) Turn off the power switch of Thermo-con.

2) Connect communication cable to communication connector (RS-485 of 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(flame

ground).

･Connection drawing for communication is shown in the Figures 1-1 and 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) Select communication types for all Thermo-cons. See the operation manual of the details.

5) That’s all for preparation of communication. Then if a communication command from the host
computer is given, each Thermo-con will reply it.

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