Omron ZS Series Installation manual

Zero Smart Sensor
ZS Series (Ver2.0)
Communication Command Reference
CompoWay/F

Introduction
Thank you for purchasing the ZS Series. This manual provides information regarding
operations and input/output formats for the communication between ZS Series controllers
and external devices using the Omron proprietary protocol, CompoWay/F.
This manual provides information for the following models and versions.
Model Firmware Version
ZS-LDC v2.000
ZS-MDC v2.000
ZS-DSU v1.000
*Different firmware versions may cause communication errors, unintended setting
overwrite, and damages on the controller. Please make sure to use the controller with
the correct software version.
If your software version is not listed in the table above, please update the software
using the SmartMonitorZero firmware update software, such as WarpEngineZero, to
match the software version.
When using the ZS Series, be sure to observe the following:
-The ZS Series must be operated by personnel knowledgeable in electrical engineering.
-To ensure correct use, please read this manual thoroughly to deepen your
understanding of the product.
-Please keep this manual in a safe place so that it can be referred to whenever
necessary.

1
ZS Series
CompoWaｙ
/
F Communication Command Reference
Introduction
Introduction
READ AND UNDERSTAND THIS DOCUMENT
Please read and understand this document before using the products. Please consult your
OMRON representative if you have any questions or comments.
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 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.
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 product.
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 document.
• 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.

2
Introduction
ZS Series
CompoWay/F Communication Command Reference
Introduction
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 PRODUCT IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL
EQUIPMENT OR SYSTEM.
PERFORMANCE DATA
Performance data given in this document 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.
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
product 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.
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.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user’s programming of a programmable product, or
any consequence thereof.
COPYRIGHT AND COPY PERMISSION
This document shall not be copied for sales or promotions without permission.
This document is protected by copyright and is intended solely for use in conjunction with the
product. Please notify us before copying or reproducing this document in any manner, for any
other purpose. If copying or transmitting this document to another, please copy or transmit it in
its entirety.

3
ZS Series
CompoWay/F Communication Command Reference
Contents
Contents
Introduction
Read and Understand This Document 1
Contents 3
Section 1 About Communication Commands 1-1
How Communication Works 1-2
Connections and Settings of External Device 1-3
Connecting using a USB Cable 1-3
Connecting using a RS-232C Cable 1-4
Command Formats 1-6
Response Formats 1-8
Examples of Abnormal End 1-10
Section 2 Details of Commands 2-1
About General Information of Communication Commands 2-2
Reading Parameter Area 2-3
List of Parameter Area Reading Commands 2-3
Commands and Responses 2-4
Writing Parameter Areas 2-6
List of Parameter Area Writing Commands 2-6
Commands and Responses 2-7
Reading Variable Areas 2-9
List of Variable Area Reading Commands 2-9
Commands and Responses 2-9
Reading Controller Information 2-11
Operation Instructions 2-12
List of Operation Instruction Commands 2-12
Commands and Responses 2-12
Section 3 Unit No. and Parameter No. 3-1
Measurement Result Obtaining Command 3-2
Setting Value Obtaining and Changing Command 3-4
Parameter List (ZS-LDC) 3-4
Parameter List (ZS-MDC) 3-13

4
ZS Series
CompoWay/F Communication Command Reference
Contents
Parameter List (ZS-DSU) 3-22
Section 4 About Obtaining Flow Data 4-2
Setting Procedures for Data Obtaining Conditions 4-3
Setting Parameters 4-8
Buffer Size and Buffer Interval 4-8
Logging Data Type 4-8
Flow Data Response 4-10
Format 4-10
Composition of Response 4-10
Revision History

1-1
Section 1
About Communication Commands
ZS Series
CompoWay/F Communication Command Reference
Section 1
About Communication Commands
How Communication Works 1-2
Connections and Settings of External Device 1-3
Connecting using a USB Cable 1-3
Connecting using a RS-232C Cable 1-4
Command Formats 1-6
Response Formats 1-8
Examples of Abnormal End 1-10

1-2
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1 About Communication Commands
How Communication Works
ZS Series controllers have communication functions with external devices. Use this function to
read the data in ZS Series controllers from the host and to write the setting data.
Communication is achieved via the Command and Response Method based on the
CompoWay/F, which is Omron's proprietary communication protocol. Controllers perform
processing according to the command sent from the host, and then return the result to the host
which sent the command as a response.
Host ZS Series Controller (RUN mode)
Programmable Controller
Personal Computer
H
LD ONZEROENABLE
P
L
H
LD ONZEROENABLE
P
L
Entering Commands Executing Commands
Controllers are in a
non-measurement state
when executing
commands.
■About channel No. when controllers are gang-mounted
The following diagram shows the channel numbers when multiple Sensor Controllers
are connected.
H
LD ON ZERO ENABLE
P
L
H
LD ON ZERO ENABLE
P
L
H
LD ON ZERO ENABLE
P
L
H
LD ON ZERO ENABLE
P
L
LD ON ZERO ENABLE
Multi-Controller Sensor Controllers
CH0 CH1 to CH9
How Communication
W
orks
Receives the results of the execution
of commands.
Outputs the result of the execution of
commands.

1-3
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1
About Communication Commands
Connections and Settings of External Devices
This section describes how to connect ZS Series controllers to external devices and how to set
them.
Connecting using a USB Cable
■Connections with external devices
Install Smart Monitor Zero and the USB driver beforehand.
After installing Smart Monitor Zero, USB ports are recognized as COM ports, and
communication is achieved as with the RS-232C. Setting the communications
specifications including baud rate is not necessary.
1. Insert one end of the USB cable into the
USB connector of the controller.
2. Insert another end of the USB cable into the
USB connector of the external device.

1-4
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1 About Communication Commands
Connecting using a RS-232C Cable
■Connections with external devices
1. Insert one end of the RS-232C cable into the
RS-232C connector of the controller.
2. Insert another end of the RS-232C cable into
the RS-232C connector of the external
device.
●Connector pin assignments
An exclusive connector is used for the connector.
An RS-232C cable compatible with the exclusive connector is provided.
Recommended parts: ZS-XRS2 (cable length: 2m)
12 3 45
67 89
1NC
2 RD(RXD)
3 SD(TXD)
4NC
5 SG(GND)
6NC
7 RS(RTS)
8 CS(CTS)
9NC
1
NC
2
SD(TXD)
3
RD(RXD)
4
RS(RTS)
5
CS(CTS)
6
NC
7
NC
8
NC
9
SG(GND)
NC 10
Signal name Signal name Pin No. Pin No.
Controller side Personal computer side (PC/AT compatible)
This cable is for personal computers.
For connections with programmable controllers, prepare a separate conversion connector
referring to the above pin assignments.

1-5
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1
About Communication Commands
■Setting of controllers
Set the communications specifications with external devices. ZS Series controllers
have three operating modes; RUN, TEACH and FUN. Set communications
specifications with external devices in FUN mode.
1. Set the mode switch to FUN.
To switch the operating mode, use the Mode Switch.
H
LD ON ZERO ENABLE
P
L
TEACH
RUN
FUN
2. Press the RIGHT key to switch the LCD screen and select [SYSTEM].
3. Press the RIGHT key to switch the LCD screen and select [COM].
4. Select [RS-232C] to set communications specifications.
Use the same communication specifications for the controller and the
external device.
Setting Range
LENGTH 8BIT or 7BIT (default value: 8BIT)
PARITY NON, OFF, EVEN (default value: NON)
STOP 1BIT or 2BIT (default value: 1BIT)
BAUDRAT 9600, 19200, 38400, 57600, 115200 (default value: 38400)

1-6
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1 About Communication Commands
Command Formats
The command format of the communication commands is shown below.
In the following section, items described with "Hex" after numerical values (ex. 02Hex) indicate
hexadecimal numbers. Those described with " " or only with numeral values indicate ASCII
characters.
(Text)
STX NODE No. Subaddress SID Command text ETX BCC
02Hex
FIXED (x101) (x100) "00"
FIXED "0" FIXED MRC SRC 03Hex
FIXED
1 byte 2 bytes 2 bytes 1 byte 1 byte 1 byte
BCC calculating range
* In the example format, 1 byte = 1 ASCII character.
Elements Details
STX This is a code to indicate the first part of communication frames (02Hex).
Make sure to set the first byte to 02Hex..
When a controller receives STX while receiving a command, it receives the
command again starting from where it received STX.
NODE No. This is the Node No. for the identification of the destination. It should be fixed to
"00."
* About Node No.
It refers to the connection group No. as seen from the host device (PLC). Not
only the ZS Series but other multiple devices are connected to the PLC. The
number assigned to devices connected to a PLC such as this is referred to as a
Node No.
Subaddress This should be fixed to "00."
SID (Service ID) This should be fixed to "0."
Command text This is the text part of the command.
"Section 2 – Details of Commands" describes these parts by command.
ETX This is a code to indicate the end of the text (03Hex).
BCC This is a block check character.
The exclusive OR (XOR) of values from Node No. to ETX per byte is BCC.
Command Formats

1-7
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1
About Communication Commands
■Example of BCC calculation
STX NODE No. Subaddress SID Command text ETX BCC
02Hex "0"
(30Hex )"0" (30Hex ) "00" (3030Hex) "0" (30Hex )"30053001" (3330303533303031Hex) 03Hex 37Hex
Set the result of calculation, which is "37Hex," to BCC.
<Calculation>
BCC = 30Hex + 30Hex + 30Hex + 30Hex + 30Hex + 33Hex +30Hex + 30Hex +35Hex + 33Hex +
30Hex +30Hex +31Hex +03Hex = 37Hex
"+" indicates the exclusive OR (XOR) operation.
Command Formats

1-8
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1 About Communication Commands
Response Formats
The response format of the communication commands is shown below.
In the following section, items described with "Hex" after numerical values (ex. 02Hex) indicate
hexadecimal numbers. Those described with " " or only with numeral values indicate ASCII
characters.
STX NODE No. Subaddress End code Response text ETX BCC
02Hex
Fixed (×101)
(×100) "00" Fixed MRC SRC 03Hex Fixed
1 byte 2 bytes 2 bytes 2 bytes 1 byte 1 byte
Elements Details
STX
NODE No.
Subaddress Command Formats - page 1 - 6
End code Refer to the next page.
Response text This is the response text part of the command.
"Section 2 – Details of Commands" describes these parts by command.
ETX
BCC Command Formats - page 1 - 6
Response
F
ormats

1-9
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1
About Communication Commands
End codes of responses are shown below.
End
code Name Details
"00" Normal end Command ends successfully.
"0F" Command error Specified command is not executed.
Refer to the response code for details of the non-execution.
"10" Parity error Parity error occurred with any character while receiving a command.
"11" Framing error Framing error occurred with any character while receiving a
command.
"12" Overrun error Overrun error occurred with any character while receiving a
command.
"13" BCC error Received an invalid BCC.
"14" Format error •Occurs when characters other than 0 to 9 or A to F are used for
command text parts. (Except during echo back tests)
•No SID and command texts exist.
Or no command text exists.
•Either MRC or SRC is missing in the command text.
"16" Subaddress error •Subaddress of the receiving frame is invalid (not supported).
•No subaddress, SID, and command texts exist.
•Subaddress is shorter than two characters, and no SID and
command texts exist.
"18" Frame length error Receiving frame exceeds the supported number of bytes.
One end code is returned after receiving one complete command frame to the node.
No response is made when ETX or BCC characters are missing.
Noises may cause response errors or no response.
Make sure to retry from the host.
It may take three seconds at longest from sending a command to receiving a response. If no
response is returned, make sure to send another command after waiting for more than three
seconds.
レ
ス
ポン
ス
フォ
ーマ
ットレ
ス
ポン
ス
フォ
ーマ
ットレ
ス
ポン
ス
フォ
ーマ
ット
Res
p
onse
F
ormats

1-10
Section 1
Connections and Settings of External Devices
ZS Series
CompoWay/F Communication Command Reference
Section 1 About Communication Commands
Examples of Abnormal End
This section shows the examples of end codes for abnormal ends while receiving commands.
●Invalid subaddress, and no SID and command text exist
Command
STX NODE No. Subaddress ETX BCC
02Hex "0" "A" 03Hex
Response
STX NODE No. Subaddress End code ETX BCC
02Hex "0" "A" "1" "6" 03Hex
End code is "16" (Subaddress error).
・This response occurred because subaddress errors are prioritized over format
errors.
●No command text exists in the command
Command
STX NODE No. Subaddress SID ETX BCC
02Hex "0" "0" "0" 03Hex
Response
STX NODE No. Subaddress End code ETX BCC
02Hex "0" "0" "1" "4" 03Hex
End code is "14" (Format error).
●Node No. is missing
Command
STX ETX BCC
02Hex 03Hex
One character is missing for the Node No.
Response
No response is returned.
●No subaddress exists, and an invalid BCC is used
Command
STX NODE No. ETX BCC
02Hex 03Hex Err
Response
STX NODE No. Subaddress End code ETX BCC
02Hex "0" "0" "1" "3" 03Hex
Subaddress is "00" and end code is "13" (BCC error).
Exam
p
les of Abnormal End

2-1
ZS Series
CompoWay/F Communication Command Reference
Section 2
Details of Commands
Section 2
Details of Commands
About General Information of Communication Commands 2-2
Reading Parameter Areas 2-3
List of Parameter Area Reading Commands 2-3
Commands and Responses 2-4
Writing Parameter Areas 2-6
List of Parameter Area Writing Commands 2-6
Commands and Responses 2-7
Reading Variable Areas 2-9
List of Variable Area Reading Commands 2-9
Commands and Responses 2-9
Reading Controller Information 2-11
Operation Instructions 2-12
List of Operation Instruction Commands 2-12
Commands and Responses 2-12

2-2
Section 2
About General Information of Communication Commands
ZS Series
CompoWay/F Communication Command Reference
Section 2 Details of Commands
About General Information of Communication Commands
Communication commands are categorized into the groups and meanings as in the following
table: Groups Meanings Pages for
Reference
System-
related Read setting values related to the target CH system. Page 2-3
Reading parameter
areas Measurement-
related Read measurement-related setting values and results of measurements. Obtain data by
specifying Unit No. and Data No.
(Refer to Section 3
for Unit No. and
Data No.)
System-
related Write setting values related to the target CH system. -
Writing parameter
areas Measurement-
related Write measurement-related setting values and results of measurements. Write data by
specifying Unit No. and Data No.
(Refer to Section 3
for Unit No. and
Data No.)
Reading variable areas Read particular kinds of data in the target CH
system. Page 2-9
Reading controller information Read information on the models connected
with a cable. Page 2-11
Operation instructions Operate data of each bank or all banks. Page 2-12
[Notes on the exchange of communication data]
・ Number of elements indicates the size of data to be exchanged. ASCII character length per
element is determined depending on parameter type codes. Specifically,
8000h to BFFFh : 4 characters per element
From C000h: 8 characters per element
Number of elements = 1 for all commands in this manual. Please enter "8001h" to specify
number of elements.
・ Machine No. indicates channel No. of the destination controller.
・ All data is exchanged in hexadecimal numbers. Therefore, "15" of the decimal number should
be expressed as "0000000Eh." (*1)
・ Distance values should be expressed in the unit of [nm]. Therefore, note that "100
（=00000064h）" indicates "100nm（0.1um）" and not 100mm. (*1)
・ Negative values are expressed as the complements of 2. For example, "-100" should be
expressed as "FFFFFF9Ch." (*1)
・ In the case that the measured values such as distance are abnormal values, data parts are
expressed as "7FFFFFFXh" ("X" varies depending on the case.) (*1)
*1: This is an example for 8 characters per element.

3
2-3
Section 2
Connections and settings of external devices
ZS Series
CompoWay/F Communication Command Reference
Section 2
Details of Commands
Reading Parameter Areas
Read parameter areas.
List of Parameter Area Reading Commands
Data Name MRC SRC Parameter
Type Reading start address
Specification
of element
numbers
Data to be read Data
Length
*2
Bank switching 02h 01h 8000h <Machine No.> 8001h 0 to 3 4
Keylock 02h 01h A002h <Machine No.> 8001h 0 : OFF, 1 : ON 4
Version
Information 02h 01h A021h <Machine No.> 8001h Software Version 4
Controller type
Information 02h 01h A022h <Machine No.> 8001h 0 : ZS-LDC, 1 : ZS-MDC 4
RS-232C Data
Length Setting 02h 01h A030h <Machine No.> 8001h 0 : 7 bits, 1 : 8 bits 4
RS-232C Parity
Setting 02h 01h A031h <Machine No.> 8001h 0 : None, 1 : Odd Number,
2 : Even Number
4
Stop bits setting 02h 01h A032h <Machine No.> 8001h 0 : 1 bit, 1 : 2 bits 4
Communication
node setting 02h 01h A033h <Machine No.> 8001h 0 to 64 4
Digits after
decimal point 02h 01h A040 <Machine No.> 8001h 0 : 1 digit, 1 : 2 digits, 2 : 3 digits,
3 : 4 digits, 4 : 5 digits
4
Digital "Eco"
mode 02h 01h A041h <Machine No.> 8001h 0 : NORMAL, 1 : ECO1, 2 : OFF 4
LCD ON/OFF 02h 01h A042h <Machine No.> 8001h 0 : OFF, 1 : AUTOOFF,
2 : ON 4
LCD Backlight 02h 01h A043h <Machine No.> 8001h 0 : OFF, 1 : AUTOOFF,
2 : ON 4
Sensor Load 02h 01h A050h <Machine No.> 8001h 0 : LOAD every time, 1 :
SAVE 4
Language 02h 01h A051h <Machine No.> 8001h 0 : Japanese, 1 :
English 4
Reading
processing unit
data *1
02h 01h
C000h＋
<Data
No.>
XXYYh
XX : Unit No.
YY : Machine No.
8000h
+ <No. of
Elements>
Data to be read 8
*1 - All reading/writing operations on processing units are assigned by using this command.
*2 - Indicates ASCII character length. Refer to page 2-2 for details.
Refer to "Section 3 - Unit No. and Parameter No." for Unit No. and Parameter No.
for each processing unit.
Reading Parameter Areas

2-4
Section 2
About General Information of Communication Commands
ZS Series
CompoWay/F Communication Command Reference
Section 2 Details of Commands
Example 1:To read the "language" information from the 2CH controller, assign a command as
follows:
[Machine No.]＝0002h
MRC SRC Parameter Type Reading start
address Number of elements
02h 01h A051h 0002h 8001h
Example 2: To read the final measured value from the 1CH controller, assign a command as follows:
[Data No.]＝20h, [Unit No.]＝30h, [Machine No.]＝01h
MRC SRC Parameter Type Reading start
address Number of elements
02h 01h C020h 3001 8001h
Commands and Responses
Command
MRC SRC
Parameter Type Reading start
address Number of elements
"02" "01"
2 bytes 2 bytes 4 bytes 4 bytes 4 bytes
Elements Details
Specify parameters depending on the data to be obtained. Parameter Type
List of Parameter Area Reading Commands page 2-3
Specify the Machine No. (=CH No.) of the controller to read data by using
an ASCII code expressed in hexadecimal numbers.
Please note that the format of "processing unit data reading" commands is
XXYYh (XX : <Unit No.>, YY : <Machine No.>)
Reading start address
About Channel No. When Controllers are Gang-mounted
page 1-2
Unit No. and Parameter No. page 3-4
Specify number of elements depending on the Parameter Type. Number of elements
List of Parameter Area Reading Commands page 2-3
Reading Parameter Areas