Omron E5CN User manual

Note: Specifications subject to change without notice.Cat. No. H130-E1-01
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Printed in Japan
0604-0.5M (0604) (B)
Cat. No. H130-E1-01
Digital Temperature Controller
Communications Functions
Overview
Com Data CompoWay/F
SYSWAYModbus
Appendix
User's Manual
with 11-segment Display
E5CN Digital Temperature Controller Communications Functions User's Manual H130-E1-01

I
Preface
The E5CN supports CompoWay/F and SYSWAY serial communications specifications.
This User's Manual describes the communications functions of the E5CN. Before using your
E5CN, thoroughly read and understand this manual in order to ensure correct use. Also, store
this manual in a safe place so that it can be retrieved whenever necessary.
©OMRON, 2004
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in
any form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written
permission of OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because
OMRON is constantly striving to improve its high-quality products, the information contained in this manual is
subject to change without notice. Every precaution has been taken in the preparation of this manual.
Nevertheless, OMRON assumes no responsibility for errors or omissions. Neither is any liability assumed for
damages resulting from the use of the information contained in this publication.

II
Read and Understand this Manual
Please read and understand this manual before using the product. Please consult your OMRON
representative if you have any questions or comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship
for a period of one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING
NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE
PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS
DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR
INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL
DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE
PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY.
In no event shall the responsibility of OMRON for any act exceed the individual price of the product on
which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS
REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS
WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to
the combination of products in the customer's application or use of the products.
At the customer's request, OMRON will provide applicable third party certification documents identifying
ratings and limitations of use that apply to the products. This information by itself is not sufficient for a
complete determination of the suitability of the products in combination with the end product, machine,
system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not
intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the
uses listed may be suitable for the products:
•Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions
or uses not described in this manual.
•Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical
equipment, amusement machines, vehicles, safety equipment, and installations subject to separate
industry or government regulations.
•Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

III
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifications and accessories may be changed at any time based on improvements and other
reasons.
It is our practice to change model numbers when published ratings or features are changed, or when
significant construction changes are made. However, some specifications of the products may be
changed without any notice. When in doubt, special model numbers may be assigned to fix or establish
key specifications for your application on your request. Please consult with your OMRON representative
at any time to confirm actual specifications of purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when
tolerances are shown.
PERFORMANCE DATA
Performance data given in this manual is provided as a guide for the user in determining suitability and
does not constitute a warranty. It may represent the result of OMRON's test conditions, and the users
must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however,
no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

IV
■Definition of Precautionary Information
The following notation is used in this manual to provide precautions required to
ensure safe usage of the product.
The safety precautions that are provided are extremely important to safety. Always
read and heed the information provided in all safety precautions.
The following notation is used.
■Symbols
Safety Precautions
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, is likely to result in minor or moderate injury or
in property damage.
Symbol Meaning
Caution
General Caution
Indicates non-specific general cautions, warnings,
and dangers.
Electrical Shock Caution
Indicates possibility of electric shock under specific
conditions.
Prohibition General Prohibition
Indicates non-specific general prohibitions.
Mandatory
Caution
General Caution
Indicates non-specific general cautions, warnings,
and dangers.

V
■Safety Precautions
*1 An SELV circuit is one separated from the power supply with double insulation
or reinforced insulation, that does not exceed 30 V r.m.s. and 42.4 V peak or
60 VDC.
*2 A class 2 power supply is one tested and certified by UL as have the current and
voltage of the secondary output restricted to specific levels.
CAUTION
Do not touch the terminals while power is being supplied.
Doing so may occasionally result in minor injury due to electric
shock.
Do not allow pieces of metal, wire clippings, or fine metallic shav-
ings or filings from installation to enter the product. Doing so may
occasionally result in electric shock, fire, or malfunction.
Do not use the product where subject to flammable or explosive
gas. Otherwise, minor injury from explosion may occasionally
occur.
Never disassemble, modify, or repair the product or touch any of
the internal parts. Minor electric shock, fire, or malfunction may
occasionally occur.
CAUTION - Risk of Fire and Electric Shock
a) This product is UL listed as Open Type Process Control
Equipment. It must be mounted in an enclosure that does not
allow fire to escape externally.
b) When using more than one shutoff switch, always turn OFF all
the shutoff switches to ensure that no power is being supplied
before servicing the product.
c) Signal inputs are SELV, limited energy.*1
d) Caution: To reduce the risk of fire or electric shock, do not
interconnect the outputs of different Class 2 circuits.*2
If the output relays are used past their life expectancy, contact
fusing or burning may occasionally occur.
Always consider the application conditions and use the output
relays within their rated load and electrical life expectancy. The life
expectancy of output relays varies considerably with the output
load and switching conditions.

VI
CAUTION
Tighten the terminal screws to between 0.74 and 0.9 N.m. Loose
screws may occasionally result in fire.
Set the parameters of the product so that they are suitable for the
system being controlled. If they are not suitable, unexpected
operation may occasionally result in property damage or
accidents.
WARNING: To reduce the risk of electric shock or fire, install the
product in a controlled environment relatively free of
contaminants.
A malfunction in the Temperature Controller may occasionally
make control operations impossible or prevent alarm outputs,
resulting in property damage. To maintain safety in the event of
malfunction of the Temperature Controller, take appropriate safety
measures, such as installing a monitoring device on a separate
line.

VII
1) Do not use this product in the following places:
•Places directly subject to heat radiated from heating equipment.
•Places subject to splashing liquid or oil atmosphere.
•Places subject to direct sunlight.
•Places subject to dust or corrosive gas (in particular, sulfide gas and ammonia gas).
•Places subject to intense temperature change.
•Places subject to icing and condensation.
•Places subject to vibration and large shocks.
2) Use and store the Digital Temperature Controller within the rated ambient temperature and humidity.
Gang-mounting two or more temperature controllers, or mounting temperature controllers above each
other may cause heat to build up inside the temperature controllers, which will shorten their service
life. In such a case, use forced cooling by fans or other means of air ventilation to cool down the
Digital Temperature Controllers.
3) To allow heat to escape, do not block the area around the product. Do not block the ventilation holes
on the product.
4) Be sure to wire properly with correct polarity of terminals.
5) Use specified size (M3.5, width 7.2 mm or less) crimped terminals for wiring. Use wires with a gage of
AWG24 to AWG14 (equal to cross-sectional areas of 0.205 to 2.081 mm2). (The stripping length is 5
to 6 mm.)
6) Do not wire the terminals which are not used.
7) To avoid inductive noise, keep the wiring for the Digital Temperature Controller's terminal block away
from power cables carry high voltages or large currents. Also, do not wire power lines together with or
parallel to Digital Temperature Controller wiring. Using shielded cables and using separate conduits
or ducts is recommended.
Attach a surge suppressor or noise filter to peripheral devices that generate noise (in particular,
motors, transformers, solenoids, magnetic coils or other equipment that have an inductance
component).
When a noise filter is used at the power supply, first check the voltage or current, and attach the noise
filter as close as possible to the temperature controller.
Allow as much space as possible between the Digital Temperature Controller and devices that
generate powerful high frequencies (high-frequency welders, high-frequency sewing machines, etc.)
or surge.
8) Use this product within the rated load and power supply.
9) Make sure that the rated voltage is attained within two seconds of turning the power ON.
10) Make sure the controller has 30 minutes or more for warm up.
11) When using self-tuning, turn ON power for the load (e.g., heater) at the same time as or before
supplying power to the Digital Temperature Controller. If power is turned ON for the Digital Temper-
ature Controller before turning ON power for the load, self-tuning will not be performed properly and
optimum control will not be achieved.
12) A switch or circuit breaker should be provided close to this unit. The switch or circuit breaker should
be within easy reach of the operator, and must be marked as a disconnecting means for this unit.
13) Always turn OFF the power supply before pulling out the interior of the product, and never touch nor
apply shock to the terminals or electronic components. When inserting the interior of the product, do
not allow the electronic components to touch the case.
14) Do not use paint thinner or similar chemical to clean with. Use standard grade alcohol.
Precautions for Safe Use

VIII
15) Design system (control panel, etc) considering the 2 second of delay that the controller’s output to be
set after power ON.
16) The output may turn OFF when shifting to certain levels. Take this into consideration when performing
control.

IX
Conventions Used in This Manual
■How This Manual is Organized
Descriptions in this manual are separated by the communications method.
Read the sections that are application to the system being used.
■Related Manuals
This manual describes the communications functions of the E5CN.
For details on the functions of the E5CN, refer to the User's Manual.
Overview
CompoWay/F
Communications Data
CompoWay/F•SYSWAY
SYSWAY
Modbus
Appendix
OverviewCom Data
SYSWAY
A
pp
endix

X

XI
Table of Contents
Preface - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I
Read and Understand this Manual - - - - - - - - - - II
Warranty and Limitations of Liability - - - - - - - - - II
Application Considerations - - - - - - - - - - - - - - - - II
Disclaimers - - - - - - - - - - - - - - - - - - - - - - - - - - - III
Safety Precautions - - - - - - - - - - - - - - - - - - - - -IV
Precautions for Safe Use - - - - - - - - - - - - - - - - VII
Conventions Used in This Manual - - - - - - - - - - -IX
SECTION 1
Communications Methods
1.1 Overview of Communications Methods....................................................... 1-2
Introduction .......................................................................................... 1-2
Communications Specifications ........................................................... 1-3
Transmission Procedure ...................................................................... 1-3
Interface ............................................................................................... 1-4
Wiring................................................................................................... 1-4
Communications Parameters............................................................... 1-5
SECTION 2
CompoWay/F Communications Procedures
2.1 Data Format ................................................................................................ 2-2
Command Frame ................................................................................. 2-2
Response Frame ................................................................................. 2-3
Communications Data.......................................................................... 2-4
End Code Example .............................................................................. 2-4
2.2 Structure of Command Text ........................................................................ 2-6
PDU Structure...................................................................................... 2-6
Area Definitions.................................................................................... 2-6
Type Code (Variable Type).................................................................. 2-6
Addresses............................................................................................ 2-7
Number of Elements ............................................................................ 2-7
List of Services..................................................................................... 2-7
2.3 Detailed Description of the Services ........................................................... 2-9
Read Variable Area.............................................................................. 2-9
Write Variable Area............................................................................ 2-10
Read Controller Attributes.................................................................. 2-12
Read Controller Status....................................................................... 2-13
Echoback Test ................................................................................... 2-14
Operation Command.......................................................................... 2-15
2.4 Response Code List.................................................................................. 2-20
SECTION 3
Communications Data for CompoWay/F and SYSWAY
3.1 Variable Area (Setting Range) List.............................................................. 3-2
3.2 Status........................................................................................................ 3-15

XII
SECTION 4
SYSWAY (E5@J and E5@X Format) Communications Procedures
4.1 Data Format ................................................................................................ 4-2
Command Frame Format..................................................................... 4-2
Response Frame ................................................................................. 4-3
Communications Data.......................................................................... 4-3
SYSWAY Command Lists.................................................................... 4-4
4.2 Command Descriptions............................................................................... 4-5
Read Process Value ............................................................................ 4-5
Write Set Values .................................................................................. 4-6
Read Set Values and MV Monitor........................................................ 4-7
Select Communications Writing ........................................................... 4-9
SECTION 5
Modbus Communications Procedure
5.1 Data Format ................................................................................................ 5-2
Command Frame ................................................................................. 5-2
Response Frame ................................................................................. 5-4
Error Codes.......................................................................................... 5-5
5.2 Function List................................................................................................ 5-6
5.3 Variable Area............................................................................................... 5-7
5.4 Detailed Description of the Services ........................................................... 5-9
Read Variable Area.............................................................................. 5-9
Write Variable Area ............................................................................ 5-11
Operation Commands........................................................................ 5-14
Echoback Test ................................................................................... 5-19
SECTION 6
Communications Data for Modbus
6.1 Variable Area (Setting Range) List.............................................................. 6-2
6.2 Status ........................................................................................................ 6-15
Appendix
ASCII List ..............................................................................................................A-2

1-1
SECTION 1
Communications Methods
This section briefly describes the supported communications methods and
how to wire equipment. Refer to this section when setting up equipment.
1.1 Overview of Communications Methods ........................ 1-2
Introduction.............................................................. 1-2
Communications Specifications............................... 1-3
Transmission Procedure.......................................... 1-3
Interface................................................................... 1-4
Wiring ...................................................................... 1-4
Communications Parameters .................................. 1-5
Communications Parameter Setup .......... 1-5
Communications Parameters................... 1-6

Overview
SECTION 1 Communications Methods
1-2
1.1 Overview of Communications Methods
■Introduction The program for the communications functions are created on the host
computer, and the E5CN’s parameters are monitored or set from the host
computer. Therefore, the description provided here is from the viewpoint of the
host computer.
CompoWay/F is OMRON’s standard communications format for general serial
communications. This format uses a standard frame format as well as the
well-established FINS* commands used for OMRON’s PLCs. Therefore, it can
simplify communications between components and the host computer.
*FINS (Factory Interface Network service)
The FINS protocol provides message communications between controllers in
OMRON FA networks.
Modbus is a standard communications control method that conforms to the
Modicon Company’s RTU-mode Modbus Protocol (PI-MBUS-300 Revision J).
Supports functions equivalent to the CompoWay/F Read Variable Area, Write
Variable Area, Operation Command, and Echoback Test functions.
The E5CN supports the following communications functions.
• Reading/writing of parameters
• Operation instructions
• Selection of setup levels
Communications are subject to the following condition:
• Parameters can be written only when the “communications writing” parameter
is set to ON (enabled).

Overview
1.1 Overview of Communications Methods
1-3
■Communications Specifications
Note: Communications speed, data bits, stop bits and vertical parity can each
be set independently in the communications setting level. Highlighted values
indicate default settings.
■Transmission Procedure
When the host computer transmits a command frame, the E5CN transmits a
response frame that corresponds to the command frame. A single response
frame is returned for each command frame. The following diagram shows the
operation of the command and response frames.
Transmission line con-
nection
RS-485: Multidrop
Communications method RS-485 (2-wire, half-duplex)
Synchronization method Start-stop synchronization
Communications baud
rate (See note.)
1,200, 2,400, 4,800, 9,600, 19,200 or 38,400 bps
Communications code ASCII
Communications data
bits (See note.)
7or 8 bits
Communications stop
bits (See note.)
1 or 2 bits
Error detection Vertical parity (none, even, or odd)
FCS (Frame Check Sequence) with SYSWAY
communications
BCC (Block Check Character) with CompoWay/F
communications
CRC-16 (Cyclic Redundancy Check 16) with Mod-
bus communications
Flow control None
Interface RS-485
Retry function None
Communications buffer 40 bytes
Communications
response wait time
0 to 99 ms, default time: 20 ms
E5CN
Command frame Command frame
Response frame
Host computer
Allow a wait time of at least 2 ms before the next command is sent after the host
computer receives a response from the E5CN.

Overview
SECTION 1 Communications Methods
1-4
■Interface
Communications with the host computer are carried out through a standard
RS-485 interface. Use a K3SC Interface Converter for RS-485 interface
conversion.
■Wiring RS-485
• The RS-485 connection can be either one-to-one or one-to-N. Up to 32 units
including the host computer can be connected in a one-to-N system.
• The total cable length is 500 m max.
• Use a shielded twisted-pair cable with wires of a thickness of AWG24
(0.205 mm2) to AWG14 (2.081 mm2).
Match the communications specifications of the E5CN and the host computer.
When using a 1: N connection, set the same communications specifications in
all of the Units. (Of course, each Unit must have a unique unit number.)
This section explains how to set the E5CN’s communications specifications.
For details on the host computer, refer to the User’s Manual provided with the
host computer.
FG
−
+
SG
RS-485
RS-485
A (−)
B (+)
12
11
A (−)
B (+)
12
11
6.8 V
120
(1/2 W
Abbreviation
Pin Abbreviation
Pin Abbreviation
Specify both ends of the transmission path including the host
computer as the end node (that is, connect terminators to both
ends). Use a terminating resistance of at least 54 Ω.
Host computer side
E5CN side
Communications transceiver
E5CN side
End node
RS-485
Shield
Shield
Terminator
Use a 120 Ω(1/2 W)
terminator.
A < B: "1" Mark
A > B: "0" Space

Overview
1.1 Overview of Communications Methods
1-5
■Communications Parameters
The E5CN’s communications specifications are set in the communications
setting level. These parameters are set on the E5CN’s front panel. The
following table shows the communications parameters and their setting
ranges.
Highlighted values indicate default settings.
●Communications Parameter Setup
Before you carry out communications with the E5CN, set up the communica-
tions unit number, baud rate, and other parameters by carrying out the
following procedure. For details on operations other than communications
parameter setup, refer to the Operation Manuals for the devices being used.
1. Press the LEVEL Key for at least three seconds to move from the “operation
level” to the “initial setting level.”
2. Press the LEVEL Key for less than one second to move from the “initial
setting level” to the “communications setting level.”
3. Select the parameters as shown below by pressing the MODE Key.
Item Code Settings Set Values
Communications protocol psel CompoWay/F (SYSWAY)/Mod-
bus
cwf/mod
Communications unit num-
ber
u-no 0 to 99 0,1to 99
Communications baud rate bps 1.2/2.4/4.8/9.6/19.2/38.4 (kbit/s) 1.2/2.4/4.8/9.6 /19.2/38.4 (kbit/s)
Communications data length len 7/8 (bit) 7/8 (bit)
Communications stop bits sbit 1/2 1/ 2
Communications parity prty None, Even, Odd none/ eVen /odd
Send data wait time sdwt 0 to 99 0 to 99 ms, default time: 20 ms

Overview
SECTION 1 Communications Methods
1-6
4. Use the DOWN or UP Keys to change the parameter set values.
●Communications Parameters
When communications parameter settings have been changed, the new
settings must be enabled by resetting the Controller.
• Protocol Selection (psel)
The communications protocol can be selected. Set CompoWay/F (SYSWAY)
or Modbus.
• Communications Unit Number (u-no)
This parameter is for setting a unique unit number for each of the Temperature
Controllers. This unit number is set so that the host computer can identify the
Temperature Controller when communications are carried out with the host
computer. The unit number can be set to an integer value between 0 and 99.
The default is “1.” When two or more Temperature Controllers are used, do not
set the same unit number. Doing so will prevent normal operation.
• Communications Baud Rate (bps)
Sets the baud rate for communications with the host computer. The communi-
cations baud rate settings are as follows: 1.2 (1200 bps), 2.4 (2400 bps),
4.8 (4800 bps), 9.6 (9600 bps), 19.2 (19200 bps), and 38.4 (38400 bps)
• Communications Data Length (len)
This parameter is for setting the number of communications data bits. Set
either “7 bits” or “8 bits.”
c
psel
cwf
c
u-no
1
c
bps
9.6
c
len
7
c
56it
2
c
prty
eVen
c
sdwt
20
Protocol selection
Communications unit
number
Communications
baud rate
Communications data
length (See note.)
Communications stop
bits (See note.)
Communications
parity
Send data wait time
Note: The “Protocol selection” setting
is displayed only when
CompoWay/F communications
are being used.

Overview
1.1 Overview of Communications Methods
1-7
• Communications Stop Bits (sbit)
This parameter is for setting the number of communications stop bits. Set
either “1” or “2.”
• Communications Parity (prty)
The communications parity can be set. Set the parity to “none,” “even,” or
“odd.”
• Send Data Wait Time (sdwt)
The send data wait time can be set in 1-ms increments between 0 and 99 ms.
The default is 20 ms.