Omron CJ2M-CPU33 User Manual

9
．
Program
50
9.1.1. Outline of Processing
The following figure shows the data flow from when PLC (SCU) issues command data to
Destination Device using serial communications until PLC receives response data from
Destination Device.
(1)The ladder program specifies the communications sequence No. 900 and executes the
PMCR instruction.
(2) The PLC receives the response data from Sensor Controller according to receive
messages defined by the communications sequence No. 900 and stores them in the
response data storage area.
(3)The Sensor Controller executes the command by receiving the command data from PLC,
and returns response data to PLC.
(4)The PLC receives the response data from Sensor Controller according to the receive
messages defined by the communications sequence No. 900, and stores them in the
response data storage area.
PLC
RS-232C Sensor Controller
CPU Unit
SCU
Ladder program
Protocol macro data
Response data
(2) Sends the command
data.
(Sequence No. 900)
5501 onwards
Response data
storage area
(4) Receives the
response data and
stores them in the
specified memory.
(Sequence No. 900)
Command data
(1) Executes the PMCR
instruction.
(Specifying the sequence No.
900)
(3) Executes the
command and
returns the
response data.
PMCR
Sequence No. 1
Sequence No. 2
Sequence No. 900
：
5020 onwards
Send data
setting area

Omron CJ2M-CPU33 Specifications

General

Category	Controller
Manufacturer	Omron
Model	CJ2M-CPU33
High-speed Processing	Yes
Power Supply	24 VDC
Operating Temperature	0 to 55 °C
User Memory	128 KB
I/O Capacity	2560 points
Humidity	10 to 90% RH
Vibration Resistance	10 to 57 Hz, 0.075 mm amplitude, 57 to 150 Hz, 9.8 m/s² acceleration

Summary

Related Manuals

Terms and Definitions

Precautions

Overview

Applicable Devices and Device Configuration

Applicable Devices

Lists the specific OMRON devices compatible with the connection guide.

Device Configuration

Details the hardware components and their interconnections for the setup.

Serial Communications Settings

Parameters

Lists the required parameter settings for PLC and Sensor Controller communication.

Cable Wiring

Explains connector configurations and pin assignments for serial communication cables.

Serial Communications Connection Procedure

Work Flow

Outlines the overall steps for connecting the PLC to the Sensor Controller.

Communication Status Check

Details methods to verify that serial communication is performing normally.

Sensor Controller Setup

Provides instructions for setting up the Sensor Controller hardware and parameters.

PLC Setup

Details the setup procedures for the PLC, including project file handling and I/O table creation.

Initialization method

Initializing PLC

Explains how to initialize the PLC settings, including CPU and Serial Units.

Initializing Serial Communications Unit

Details the procedure for initializing the settings of the Serial Communications Unit.

Initializing CPU Unit

Guides on initializing the CPU Unit settings by clearing memory areas.

Initializing Sensor Controller

Refers to another manual for Sensor Controller initialization procedures.

Program

Program Overview and Connection Setup

Explains program overview, connection procedures, and PMCR instruction.

Communication Sequence and Error Handling

Covers communications sequence, data format, error detection, and processing.

Memory Maps and Ladder Program

Shows memory maps, address allocations, and details of the ladder program.

Protocol Macro Data Configuration

Explains protocol macro data composition, settings, and timing.

Revision History