SMC Networks THERMO-CON HEC001 Series Use and care manual

サーモコン
HEC002-A
THERMO-CON
Model No.
HEC001series
HEC003series
HEC012series
HEC002series
HEC006series
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:k[email protected]
Notice: The content of this manual can be revised without a previous notice.

CONTENTS
HEC iii
CONTENTS
Pages
1Preparation 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
3.3Communication procedures and format ------------------------------------------------------------ 3-2
3.4Calculation 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
4.3Reading internal sensor--------------------------------------------------------------------------------- 4-2
4.4Reading external sensor-------------------------------------------------------------------------------- 4-3
4.5Reading alarm status ------------------------------------------------------------------------------------ 4-3
4.6Reading 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
6Communication Format and
Examples of Answers from Thermo-con-------------------------------- 6-1

Preparation for Communication
HEC 1-1
1Preparation 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

Specifications of Communication Method
HEC 2-1
2Specifications of Communication Method
・Standards･････････････････････････････････････
・Circuit type･･･････････････････････････････････
・Communication type･･･････････････････････････
・Communication speed･･････････････････････････
・Character code････････････････････････････････
・Parity･････････････････････････････････････････
・Start bit･･････････････････････････････････････
・Data length･･･････････････････････････････････
・Stop bit･･･････････････････････････････････････
・Block check･･･････････････････････････････････
RS-485 or RS-232C
Half duplex
Asynchronous
Changeable, 600,1200,2400,4800,9600,19200 bps
ASCII
Select, Nil, even number, odd number
１bit
Select 7 bit or 8 bit.
Select 1 bit or 2 bit.
Sum check
Note: Values underlined indicate default values at all reset.
It is set to these values when delivered.

Communication Format
HEC 3-1
3Communication Format
3.1 Control code used for communication
3.2 Command code list
Command code (COM)
Contents
31H
Set temperature (without writing EEPROM) and read
32H
Read internal sensor
33H
Read external sensor
34H
Read alarm status
35H
Read temperature average data
(It is same as reading external sensor in this model.)
36H
Set offset (without writing EEPROM) and read
37H
Set temperature (with writing EEPROM)
38H
Set offset (with writing EEPROM)
Control code
ASCII code
ENQ
05H
STX
02H
ETX
03H
ACK
06H
CR
0DH
SOH
01H
・”H” of ASCII code indicates hexa code.

Communication Format
HEC
3-2
3.3 Communication procedures and format
The host computer has the initiative of sequence. Sequence always starts from the host computer
and each Thermo-con replies it.
If communication data is processed normally, the Thermo-con returns specified response and if
processing communication data is failed, no response is returned.
When no response is returned to the host computer from the Thermo-con even if waiting for 3 sec.,
resend the data. The Thermo-con returns response after waiting for 50 msec.
For communication of plural number of communication data, wait until the return message is
received from the thermo-con to send the next communication data. It sometimes cannot return the
messages properly when the communication data is received successively.
Selection of Unit Specification
･There are two cases in communication format, which are specifying unit No. and not.
･When one Thermo-con is used, select “without secifying unit” and when two or more
Thermo-cons are used, select “ with specifying unit”.
･When several Thermo-con are used with without specified unit No.,correct control is not
realized due to data conflict.
･In the case of use with specified unit No.,ensure to coincide communication No. and each
Thermo-con unit No.
(1) Setting Change
Host →
STX
COM
Data
ETX
Check sum
CR
10110010-1 10-2 (H) (L)
←Thermo-con
ACK
CR
<Specifying unit>
Host →
SOH
UT
STX
COM
Data
ETX
Check sum
CR
10110010-1 10-2 (H) (L)
←Thermo-con
ACK
UT
CR
(2) Confirming and reading
Host →
ENQ
COM
Check sum
CR
(H) (L)
←Thermo-con
STX
COM
Data
ETX
Check sum
CR
10110010-1 10-2 (H) (L)
Host →
ACK
CR
(Possible to omit)

Communication Format
HEC 3-3
<Specifying unit>
Host →
SOH
UT
ENQ
COM
Check sum
CR
(H) (L)
←Thermo-con
SOH
UT
STX
COM
Data
ETX
Check sum
CR
10110010-1 10-2 (H) (L)
Host →
ACK
UT
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. with second mode of Thermo-
con within O-F. (UT is the code adding 30H to unit No.. 30H---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 EEPROM is specified, changed data is memorized in EEPROM each time. Since
writing life of EEPROM is (approx. 1 million times), EEPROM is changed only when data is changed.
3.4 Calculation of Check Sum
Calculation range ---------------- From the second byte to ETX
when there is no ETX, add before check sum.
Calculating method---------------Take out the lower 1 byte of the total.
eg.) Set temperature to 30 deg.C (without unit specified)
STX 31H 33H 30H 30H 30H ETX 3FH 34H CR
Total F4H
eg.) Read Thermo-con internal sensor of unit No.2
SOH 32H 05H 32H 36H 39H CR
Total 69H
Note) Check sum is not ASCII code.
Data of UT and Check Sum
Character data
0…9
Ａ
Ｂ
Ｃ
Ｄ
Ｅ
Ｆ
ASCII
30H…39H
41H
42H
43H
44H
45H
46H
UT and check sum
30H…39H(ditto)
3AH
3BH
3CH
3DH
3EH
3FH

Details of Communication Format
HEC 4-1
4Details of Communication Format
4-1 Temperature setting (without writing EEPROM)
The host computer sets temperature of each Thermo-con. In this command, temperature setting data is
not written in EEPROM. This data is invalidated by turning off power.
The setting range is from 10.0 to 60.0 deg.C. As 0.1 deg.C is the minimum unit, the number in the
hundredths place (10-2) should always be 0 (=30H). (When the value at every 0.01deg.C is input, it is
rounded off.)
Host →
STX
31H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
CR
<Specifying unit>
Host →
SOH
UT
STX
31H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
UT
CR
4-2 Reading setting temperature
As 0.1 deg.C is the minimum unit, the number in the hundredths place (10-2) is always 0 (=30H).
Host →
ENQ
31H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
STX
31H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
CR
(Possible to omit)

Details of Communication Format
HEC
4-2
<Specifying unit>
Host →
SOH
UT
ENQ
31H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
SOH
UT
STX
31H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
UT
CR
(Possible to omit)
4-3 Reading internal sensor
As the minimum unit is 0.01 deg.C, the value in the hundredths place can be read.
Host →
ENQ
32H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
STX
32H
Internal sensor
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
CR
(Possible to omit)
Note）2DH is entered in 101digit “-“ is attached to temperature data.
<Specifying unit>
Host →
SOH
UT
ENQ
32H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
SOH
UT
STX
32H
Internal sensor
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
UT
CR
(Possible to omit)
Note）2DH is entered in101digit “-“ is attached to temperature data.

Details of Communication Format
HEC 4-3
4-4 Reading external sensor
As the minimum unit is 0.01 deg.C, the value in the hundredths place can be read.
Host →
ENQ
33H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
STX
33H
External sensor
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
CR
(Possible to omit)
Note）2DH is entered in 101digit “-“ is attached to temperature data.
<Specifying unit>
Host →
SOH
UT
ENQ
33H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
SOH
UT
STX
33H
External sensor
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
UT
CR
(Possible to omit)
Note）2DH is entered in 101digit “-“ is attached to temperature data.
4-5 Reading alarm status
Host →
ENQ
34H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
STX
34H
Data
ETX
Check sum
CR
D1 D2 D3 (Ｈ)(Ｌ)
Host →
ACK
CR
(Possible to omit)

Details of Communication Format
HEC
4-4
<Specifying unit>
Host →
SOH
UT
ENQ
34H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
SOH
UT
STX
34H
Data
ETX
Check sum
CR
D1 D2 D3 (Ｈ)(Ｌ)
Host →
ACK
UT
CR
(Possible to omit)
Data (D2, D2, D3) changes following bit line to ASCII code. (1 is for ON, 0 is for OFF)
D1
23 22 21 20
High temp. cut off alarm ERR12
Low temp. cut off alarm ERR13
Unused
Output failure alarm ERR15
D2
23 22 21 20
Upper temperature limit alarm WRN
Lower temperature limit alarm WRN
Thermostat alarm ERR14
DC power supply failure alarm ERR11
D3
23 22 21 20
External sensor failure alarm ERR18
Internal sensor failure alarm ERR17
During Auto tuning or auto tuning warning ERR19
Flow switch alarm ERR16 or level switch alarm ERR20
When some alarms/warnings go off at the same time, D1 to D3 reaches the added value.
Ex. When the “Upper temperature limit alarm” and the “DC power voltage alarm” go off simultaneously,
D2 will be 23X1+22X0+21X0+20X1=9(=39H).

Details of Communication Format
HEC 4-5
4-6 Reading temperature average data
Note) For this product, the average temperature data, Tm, indicates the temperature of the external
sensor. Refer to “4-4 Reading external sensor” for the format.
4-7 Offset setting (without writing EEPROM)
Set offset of each Thermo-con from host. In this command, offset data loses effect with furning power to
OFF because it isn’t memorized into EEPROM.
It can be set at a minimum of every 0.01 deg.C.
Host →
STX
36H
Offset
ETX
Check sum
CR
Symbol 10010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
CR
Note)As for symbols, minus is indicated by “-“(=2DH) and plus is indicated by “0”(=30H).
<Specifying unit>
Host →
SOH
UT
STX
36H
Offset
ETX
Check sum
CR
Symbol 10010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
UT
CR
Note)As for symbols, minus is indicated by “-“(=2DH) and plus is indicated by “0”(=30H).
4-8 Reading offset
As the minimum unit is 0.01 deg.C, the value in the hundredths place can be read.
Host →
ENQ
36H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
STX
36H
Offset
ETX
Check sum
CR
Symbol 10010-1 10-2 (Ｈ)(Ｌ)
Host →
ACK
CR
(Possible to omit)
Note) As for symbols, minus is indicated by “-“(=2DH) and plus is indicated by “0”(=30H).

Details of Communication Format
HEC
4-6
<Specifying unit>
Host →
SOH
UT
ENQ
36H
Check sum
CR
(Ｈ)(Ｌ)
←Thermo-con
SOH
UT
STX
36H
Offset
ETX
Check sum
CR
Symbol 10010-1 10-2 (Ｈ) (Ｌ)
Host →
ACK
UT
CR
(Possible to omit)
Note) As for symbols, minus is indicated by “-“(=2DH) and plus is indicated by “0”(=30H).
4-9 Temperature setting (with writing EEPROM)
The host computer sets temperature of each Thermo-con. In this command, temperature setting data is
written in EEPROM.
The setting range is from 10.0 to 60.0 deg.C. As 0.1 deg.C is the minimum unit, the number in the
hundredths place (10-2) should always be 0 (=30H). (When the value at every 0.01deg.C is input, it is
rounded off.)
Host →
STX
37H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
CR
<Specifying unit>
Host →
SOH
UT
STX
37H
Setting data
ETX
Check sum
CR
10110010-1 10-2 (Ｈ)(Ｌ)
←Thermo-con
ACK
UT
CR