Omron G9SP-N20S Instruction Manual

Machine Automation Controller NJ-series
General-purpose Seriarl
Connection Guide (RS-232C)
OMRON Corporation
G9SP Safety Controller
P545-E1-01

About Intellectual Property Rights and Trademarks
Microsoft product screen shots reprinted with permission from Microsoft Corporation.
Windows is a registered trademark of Microsoft Corporation in the USA and other countries.
EtherCAT®is registered trademark and patented technology, licensed by Beckhoff Automation
GmbH, Germany.
Sysmac is a trademark or registered trademark of OMRON Corporation in Japan and other
countries for OMRON factory automation products.
Company names and product names in this document are the trademarks or registered
trademarks of their respective companies.

Table of Contents
1. Related Manuals........................................................................................ 1
2. Terms and Definitions............................................................................... 1
3. Remarks..................................................................................................... 2
4. Overview .................................................................................................... 3
5. Applicable Products and Support Software............................................ 4
5.1. Applicable Products ........................................................................... 4
5.2. Device Configuration.......................................................................... 5
6. Serial Communications Settings ............................................................. 6
6.1. Serial Communications Settings........................................................ 6
6.2. Cable Wiring Diagram........................................................................ 7
6.3. Example of Checking Connection...................................................... 8
7. Connection Procedure.............................................................................. 9
7.1. Work Flow.......................................................................................... 9
7.2. Setting Up the Safety Controller....................................................... 10
7.3. Setting Up the Controller...................................................................11
7.4. Connection Status Check................................................................. 22
8. Initialization Method................................................................................ 24
8.1. Initializing the Controller................................................................... 24
9. Project File............................................................................................... 26
9.1. Overview.......................................................................................... 26
9.2. Destination Device Command.......................................................... 29
9.3. Error Detection Processing.............................................................. 33
9.4. Variables.......................................................................................... 34
9.5. Ladder Program............................................................................... 37
9.6. Timing Charts................................................................................... 49
9.7. Error Status List ............................................................................... 51
10. Revision History...................................................................................... 54

1. Related Manuals
1
1. Related Manuals
The table below lists the manuals related to this document.
To ensure system safety, make sure to always read and heed the information provided in all
Safety Precautions, Precautions for Safe Use, and Precaution for Correct Use of manuals for
each device which is used in the system.
Cat. No. Model Manual name
W500 NJ501-[][][][] NJ-series CPU Unit Hardware User's Manual
W501 NJ501-[][][][] NJ-series CPU Unit Software User's Manual
W494 CJ1W-SCU[]2 CJ-series Serial Communications Units Operation Manual for
NJ-series CPU Unit
W502 NJ501-[][][][] NJ-series Instructions Reference Manual
W504 SYSMAC-SE2[][][] Sysmac Studio Version 1 Operation Manual
Z922 G9SP-[][][][] G9SP Series Safety Controller Operation Manual
Z923 G9SP-[][][][] G9SP Series Safety Controller Instructions Reference Manual
2. Terms and Definitions
Terms Explanation and Definition
No-protocol No-protocol Mode enables you to receive or send data by using SCU
Send Serial (SerialSend) or SCU Receive Serial (SerialRcv)
instructions. In this mode, messages are sent/received to/from a
destination device.
Send message A send message is a communications frame (command) sent from the
Serial Communications Unit to the destination device. This is executed
by the SerialSend instruction and sent to the destination device.
Receive message A receive message is a communications frame (response) sent from the
destination device to the Serial Communications Unit. The SerialRcv
instruction is used to read data received from the destination device.

3. Remarks
2
3. Remarks
(1) Understand the specifications of devices which are used in the system. Allow some
margin for ratings and performance. Provide safety measures, such as installing safety
circuit in order to ensure safety and minimize risks of abnormal occurrence.
(2) To ensure system safety, always read and heed the information provided in all Safety
Precautions, Precautions for Safe Use, and Precaution for Correct Use of manuals for
each device used in the system.
(3) The user is encouraged to confirm the standards and regulations that the system must
conform to.
(4) It is prohibited to copy, to reproduce, and to distribute a part of or whole part of this
document without the permission of OMRON Corporation.
(5) The information contained in this document is current as of August 2013. It is subject to
change without notice for improvement.
The following notation is used in this document.
Indicates a potentially hazardous situation which, if not avoided,
will result in minor or moderate injury, or may result in serious
injury or death. Additionally there may be significant property
damage.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or in property damage.
Precautions for Safe Use
Precautions on what to do and what not to do to ensure safe usage of the product.
Precautions for Correct Use
Precautions on what to do and what not to do to ensure proper operation and performance.
Additional Information
Additional information to read as required.
This information is provided to increase understanding or make operation easier.

4. Overview
3
4. Overview
This document describes the procedure for connecting a Safety Controller (G9SP series) of
OMRON Corporation (hereinafter referred to as OMRON) with an NJ-series Machine
Automation Controller (hereinafter referred to as the Controller) via serial communications,
and the procedure for checking their connection.
Refer to the serial communications settings of the project file you prepared to understand the
setting method and key points to connect the devices via serial communications.
This project file is used to check a serial connection by sending the monitor I/O command to
the destination device.
Obtain the latest "Sysmac Studio project file" from OMRON beforehand.
Name File name Version
Sysmac Studio project file
(extension: SMC) OMRON_G9SP_SERI232_LD_E
V100.SMC
Ver.1.00
This document aims to explain the wiring method and communications settings
necessary to connect the corresponding devices and provide the setting
procedure. The program used in this document is designed to check if the
connection was properly established, and is not designed to be constantly used
at a site. Therefore, functionality and performances are not sufficiently taken into
consideration. When you construct an actual system, please use the wiring
method, communications settings and setting procedure described in this
document as a reference and design a new program according to your
application needs.

5. Applicable Products and Support Software
4
5. Applicable Products and Support Software
5.1. Applicable Products
The applicable devices are as follows:
Manufacturer Name Model
OMRON NJ series CPU Unit NJ501-[][][][]
NJ301-[][][][]
OMRON Serial Communications Unit CJ1W-SCU[]2
OMRON Safety Controller G9SP-[][][][]
OMRON Expansion I/O Unit CP1W-20EDT[]
CP1W-32ET[]
OMRON RS-232C Option Board CP1W-CIF01
OMRON G9SP Configurator Support Software WS02-G9SP[][]-V1
Precautions for Correct Use
As applicable devices above, the devices with the models and versions listed in Section 5.2.
are actually used in this document to describe the procedure for connecting devices and
checking the connection.
You cannot use devices with versions lower than the versions listed in Section 5.2.
To use the above devices with versions not listed in Section 5.2 or versions higher than those
listed in Section 5.2, check the differences in the specifications by referring to the manuals
before operating the devices.
Additional Information
This document describes the procedure to establish the network connection. Except for the
connection procedure, it does not provide information on operation, installation or wiring
method. It also does not describe the function or operation of the devices. Refer to the
manuals or contact your OMRON representative.

5. Applicable Products and Support Software
5
5.2. Device Configuration
The hardware components to reproduce the connection procedure of this document are as
follows:
4
Manufacturer Name Model Version
OMRON Serial Communications Unit CJ1W-SCU42 Ver.2.0
OMRON NJ-series CPU Unit NJ501-1500 Ver.1.01
OMRON Power Supply Unit NJ-PA3001
OMRON Sysmac Studio SYSMAC-SE2[][][] Ver.1.02
OMRON Sysmac Studio project file OMRON_G9SP_SERI23
2_LD_EV100.SMC Ver.1.00
- Personal computer
(OS: Windows 7) -
- USB cable
(USB 2.0 type B connector) -
- Serial Communications Cable -
OMRON Safety Controller G9SP-N20S Ver.1.00
OMRON RS-232C Option Board CP1W-CIF01
OMRON Memory Cassette CP1W-ME05M
OMRON Expansion I/O Unit CP1W-20EDT
OMRON Expansion I/O Connecting
Cable CP1W-CN811
Precautions for Correct Use
Obtain the latest Sysmac Studio project file from OMRON in advance.
(To obtain the files, contact your OMRON representative.)
Additional Information
It may not be possible to reproduce the same operation with different devices or versions.
Check the configuration, model and version. If they are different from your configuration.
Contact your OMRON representative.
Additional Information
For information on the serial cable (RS-232C), refer to 3-3 RS-232C and RS-422A/485
Wiring in the CJ-series Serial Communications Units Operation Manual for NJ-series CPU
Unit (Cat.No. W494).
Additional Information
In this document, a USB is used to connect with the Controller. For information on how to
install a USB driver, refer to A-1 Driver Installation for Direct USB Cable Connection of the
Sysmac Studio Version 1 Operation Manual (Cat.No. W504).
NJ501-1500+
CJ1W-SCU42
Personal computer
(Sysmac Studio installed,
OS:Windows7)
USB cable Serial Communications
Cable (RS-232C)
G9SP-N20S
CP1W-CIF01
CP1W-ME05M
CP1W-20EDT
(Up to 2 Expansion I/O
Units can be connected.)
Expansion I/O Connecting Cable

6. Serial Communications Settings
6
6. Serial Communications Settings
This section describes the specifications such as cable wiring and communication parameters
that are set in this document.
Additional Information
This document and project file can be used to perform operations using the settings and
command described in this section. Modifications are necessary to perform communications
using different settings.
6.1. Serial Communications Settings
The table below lists the settings for serial communications.
CJ1W-SCU42 G9SP-N20S
Unit number 0 -
Communications (connection) port Port 2 (RS-232C) -
Serial communications mode No-protocol -
Data length 8 bits 8 bits (fixed)
Stop bit 1 bit 1 bit (fixed)
Parity Even (default value) Even (fixed)
Baud rate 9,600 bps (default value) 9,600 bps (fixed)
No-protocol Start Code Yes (#40) #40 (fixed)
No-protocol End Code No (#2A0D (fixed))
*One byte data can only be set as the no-protocol End Code. Thus, in this document, #2A0D
is treated as data.
Precautions for Correct Use
This document explains the setting procedure with Serial Communication Unit CJ1W-SCU42
whose Unit No. is 0, communication port is port 2 and device name is SCU. To connect
devices under different conditions, refer to 9. Project File and create a ladder program by
changing the variable names and setting values.

6. Serial Communications Settings
7
6.2. Cable Wiring Diagram
For details on the cable wiring, refer to Section 3 Installation and Wiring in the CJ-series Serial
Communications Units Operation Manual for NJ-series CPU Unit (Cat.No. W494).
Check the connector configuration and pin assignment before wiring.
■Connector configuration and pin assignment
< OMRON G9SP-N20S + CP1W-CIF01 > Applicable Connectors: D-sub 9 pin
<OMRON CJ1W-SCU42> Applicable connector: D-sub 9 pin
■Cable/pin assignment
CJ1W-SCU42 Serial
Communications Unit Safety Controller (G9SP-N20S)
Signal
name Pin No. Pin No. Signal name
FG 1 1 FG
SD 2 2 SD
RD 3 3 RD
RS 4 4 RS
CS 5 5 CS
5V 6 6 5V
DR 7 7 DR
ER 8 8 ER
SG 9 9 SG
RS-232C
Interface
FG Shell Shell FG
RS-232C
Interface
D-sub 9-pin
Cable connector type: Male D-sub 9-pin Cable connector type: Male

6. Serial Communications Settings
8
6.3. Example of Checking Connection
This connection example uses the ladder program for network connection. For details on the
ladder program, refer to 9. Project File.
The Controller and Safety Controller send and receive a message of Monitor I/O. The
following figure shows the outline of the operation.
CPU Serial
Communications
Unit
RS-232C Safety Controller
User memory
Ladder program
G9SP_
Comma
ndData
G9SP_
Respon
seData
SerialRcv
instruction
SerialSend
instruction
Send data
Receive data
Receive data
Storage area
Send data
Setting area
Executing SerialSend instruction
Monitoring I/O
Sending/receiving serial
communication command
Monitoring I/O
Executing SerialRcv instruction
Monitoring I/O

7. Connection Procedure
9
7. Connection Procedure
This section describes the procedure for connecting the Controller via serial communications.
This document explains the procedures for setting up the Controller from the factory default
setting. For the initialization, refer to Section 8 Initialization Method.
7.1. Work Flow
Take the following steps to connect the Controller via serial communications.
7.2 Setting Up the Safety Controller Set up the Safety Controller.
↓
7.2.1 Installing the Option Board Install the Option Board of the Safety Controller.
↓
7.3 Setting Up the Controller Set up the Controller.
↓
7.3.1 Hardware Settings of the Serial
Communications Unit Set the hardware switches on the Serial Communications Unit and connect to the Controller.
↓
7.3.2 Starting the Sysmac Studio and
Importing the Project File Start the Sysmac Studio, and import the Sysmac Studio project file.
↓
7.3.3 Going Online and Transferring
the Project Data Connect online with the Sysmac Studio and transfer the project data to the Controller.
↓
7.4 Connection Status Check Check the serial network connection status.
↓
7.4.1 Checking the Connection Status Confirm that serial communications are performed
normally.
↓
7.4.2 Checking Data that are Sent and
Received Confirm that the correct data are sent and received.
Precautions for Correct Use
Obtain the latest Sysmac Studio project file from OMRON in advance.
(To obtain the files, contact your OMRON representative.)

7. Connection Procedure
10
7.2. Setting Up the Safety Controller
Set up the Safety Controller.
7.2.1. Installing the Option Board
Install the Option Board.
Precautions for Correct Use
Make sure that the power supply is OFF when you install.
1 Confirm that the power supply to
the Safety Controller is OFF.
2 Remove the cover of the option
board slot, and install the
RS-232C option board
(CP1W-CIF01).
RS-232C communications
settings of the Safety Controller
are as follows and cannot be
changed.
•RS-232C communications
setting (fixed)
Baud rate: 9,600 bps
Data length: 8 bits
Stop bits: 1 bit
Parity: E (Even parity)
(Front of Safety Controller)
(RS-232C Option Board)
3 Connect the serial cable
(RS-232C) to the Safety
Controller as shown on the right.
Connect the expansion I/O
connecting cable to the Safety
Controller.
Connect the 24VDC(+) line to
terminal V1 of the Safety
Controller, and the GND line to
terminal G1.
4 Turn ON the power supply to the
Safety Controller.
24VDC power supply
Serial Cable

7. Connection Procedure
11
7.3. Setting Up the Controller
Set up the Controller.
7.3.1. Hardware Settings of the Serial Communications Unit
Set the hardware switches on the Serial Communications Unit.
Precautions for Correct Use
Make sure that the power supply is OFF when you perform the setting up.
1 Confirm that the power supply to
the Controller is OFF.
*If the power supply is turned
ON, settings may not be
applicable as described in the
following procedure.
2 Connect the serial cable
(RS-232C) to Port 2 connector.
*This setting is required to use
Port 2 of Serial
Communications Unit.
3 Set the Unit No. Switch to 0.
(The unit number is factory-set
to 0.)
4 Connect the Serial
Communications Unit to the
Controller.
Connect the personal computer,
Safety Controller and Controller
using the Serial cable and USB
cable as shown in 5.2 Device
Configuration.
Turn ON the power supply to the
Controller.
CJ1W-SCU42
USB cable
NJ501-1500
End cover
Power Supply Unit Serial Cable

7. Connection Procedure
12
7.3.2. Starting the Sysmac Studio and Importing the Project File
Start the Sysmac Studio, and import the Sysmac Studio project file.
Install the programming software and USB driver in the personal computer beforehand.
1 Start the Sysmac Studio.
Click the Import Button.
*If a confirmation dialog for an
access right is displayed at
start, select to start.
2 The Import File Dialog Box is
displayed. Select
OMRON_G9SP_SERI232_LD_
EV100.smc (Sysmac Studio
project file) and click the Open
Button.
*Obtain the Sysmac Studio
project file from OMRON.
3 OMRON_G9SP_SERI232_LD_
EV100 project is displayed.
The left pane is called Multiview
Explorer, the right pane is called
Toolbox and the middle pane is
called Edit Pane.
Multiview
Explorer Edit Pane Toolbox

7. Connection Procedure
13
7.3.3. Checking the Parameters and Building
Check the set parameters, execute the program check on the project data and build the
Controller.
1 Double-click CPU/Expansion
Racks under Configurations
and Setup in the Multiview
Explorer.
2 The CPU/Expansion Racks Tab
is displayed on the Edit Pane.
Select the Serial
Communications Unit icon as
shown on the right.
Confirm that CJ1W-SCU42 is
displayed, the device name is
SCU, and the unit number is 0.
*If the settings are different,
change the values.
Click Edit Special Unit
Settings.
3 The 0 [Unit 0]: Tab is displayed.
Open the pull-down menu of
Parameter group to show and
select Port2: No-Protocol
Settings.

7. Connection Procedure
14
4 Parameter group to show is set
to Port 2: No-Protocol Settings.
The items of the Port 2:
No-Protocol Settings are
displayed.
Confirm that the Port2: Port
settings is set to User settings
and other items are the same as
Section 6.1.
*If the settings are different from
the above, change the values
from the pull-down menu. Click
the Apply Button after
changing values.
5 Double-click I/O Map under
Configurations and Setup on
the Multiview Explorer.
The I/O Map Tab Page is
displayed and the parameters of
the Unit are displayed.
6 Confirm that the data in the
Variable Columns on the I/O
Map Tab Page start with SCU
and that the Global Variables
are set in the Variable Type
Columns.
*If the settings are different from
the above, right-click on
CJ1W-SCU42 and select
Create Device Variable.
7 Double-click the Task Settings
under Configurations and
Setup in the Multiview Explorer.

7. Connection Procedure
15
8 The Task Settings Tab Page is
displayed in the Edit Pane.
Click the Program Assignment
Settings Button and confirm
that Program0 is set under
PrimaryTask.
9 Select Check All Programs
from the Project Menu.
10 The Build Tab Page is displayed
in the Edit Pane.
Confirm that "0 Errors" and "0
Warnings" are displayed.
11 Select Rebuild Controller from
the Project Menu.
A screen is displayed indicating
the conversion is being
performed.
12 Confirm that "0 Errors" and "0
Warnings" are displayed in the
Build Tab Page.

7. Connection Procedure
16
7.3.4. Going Online and Transferring the Project Data
Connect online with the Sysmac Studio and transfer the project data to the Controller.
Always confirm safety at the destination node before you transfer a user
program, configuration data, setup data, device variables, or values in memory
used for CJ-series Units from the Sysmac Studio.
The devices or machines may perform unexpected operation regardless of the
operating mode of the CPU Unit.
Always confirm safety before you reset the Controller or any components.
1 Select Change Device from the
Controller Menu.
2 The Change Device Dialog Box
is displayed.
Confirm that the Device and
Version are set as shown on the
right.
*If the settings are different,
change the value from the
pull-down list.
Click the OK Button.
3 If the settings were changed in
Step 2, the Build Dialog Box is
displayed. Click the Yes Button.

7. Connection Procedure
17
4 Select the Communications
Setup from the Controller Menu.
5 The Communications Setup
Dialog Box is displayed.
Select the Direct Connection via
USB Option in the Connection
Type Field.
Click the OK Button.
6 Select Online from the
Controller Menu.
A confirmation dialog box is
displayed. Click the Yes Button.
*The displayed dialog depends
on the status of the Controller
used. Select the Yes Button to
proceed with the processing.
Additional Information
For details on online connections to a Controller, refer to Section 5 Going Online with a
Controller in the Sysmac Studio Version 1.0 Operation Manual (Cat. No. W504).
7 When an online connection is
established, a yellow bar is
displayed on the top of the Edit
Pane.
8 Select Synchronization from
the Controller Menu.