Omron CPM2C User Manual

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Initial System Checks and Test Run Procedure Section 5-1
5-1 Initial System Checks and Test Run Procedure
5-1-1 Initial System Checks
Check the following items after setting up and wiring the CPM2C, but before
performing a test run.
Note 1. Always clear memory before beginning to program the CPM2C. Although
memory is cleared before the CPU Unit is shipped, the contents of the DM,
HR, AR, and counter areas may change in transit. See
4-2-2 Clearing
Memory
for details on the All Clear operation.
2. See
1-3-3 Operating Mode at Startup to determine what mode the CPM2C
will enter when the power is turned ON.
5-1-2 Flash Memory Precautions
Observe the following precautions to protect the flash memory and ensure
proper operation.
1,2,3... 1. If changes are made in the read-only DM area (DM 6144 through DM
6599) or PC Setup (DM 6600 through DM 6655), the PC’s operating mode
must be changed to write the new contents to flash memory. If backup bat-
tery is changed before the changes are written to flash memory, the chang-
es will be lost.
The changes can be saved by switching the CPM2C to RUN or MONITOR
mode or turning the CPM2C OFF and then ON again.
2. When contents of the program, read-only DM (DM 6144 through DM
6599), or PC Setup (DM 6600 through DM 6655) have been changed, star-
tup processing will take up to 1,200 ms longer than usual. Be sure to take
this one-time startup delay into account if it may affect operations.
3. If one of the following three operations is performed in MONITOR or RUN
mode, the CPM2C’s cycle time will be extended by up to 1,200 ms and in-
terrupts will be disabled while the program or PC Setup is being overwrit-
ten.
• Program changes with the online edit operation
• Changes to the read-only DM area (DM 6144 through DM 6599)
• Changes to the PC Setup (DM 6600 through DM 6655)
A “SCAN TIME OVER” error won’t occur during these operations. Be sure
to take this delay in the CPM2C’s I/O response times into account when
performing online editing.
5-1-3 CPM2C Test Run Procedure
1,2,3... 1. Power Supply Application
a) Check the CPM2C’s power supply voltage and terminal connections.
b) Check the I/O devices’ power supply voltage and terminal connec-
tions.
c) Turn ON the power supply and check that the “PWR” indicator lights.
Item Points to check
Power supply and
I/O connections
Is the wiring correct?
Are the terminals securely tightened?
Are there any shorts between crimp terminals or wires?
Refer to 3-4 Wiring and Connections for details.
Connecting cables Are the cables all connected correctly and locked?
Refer to 3-4 Wiring and Connections for details.
Protective label Has the protective label been removed?

Omron CPM2C Specifications

General

Type	Programmable Logic Controller (PLC)
Input Voltage	24 VDC
Number of Outputs	Up to 16
Communication Ports	RS-232C
Programming Language	Ladder Logic
Mounting	DIN rail
CPU	Built-in
Timer/Counter	256 timers/counters
Analog Input	Optional
Analog Output	Optional
Storage Temperature	-25°C to 70°C
Memory	4K words
Program Memory	4K words
Humidity	25 to 85% RH (non-condensing)

Summary

PRECAUTIONS

Safety Precautions

Critical safety warnings regarding grounding, live components, and external circuit safety measures.

Application Precautions

Crucial safety guidelines for system applications, emphasizing risk assessment and proper product use.

Operating Environment Precautions

Lists unsuitable locations and requirements for shielding against noise and environmental factors.

SECTION 1 Introduction

1-1 CPM2C Features and Functions

Introduces the CPM2C's special features, functions, system configurations, and capabilities.

1-2 System Configurations

Details possible system configurations, including CPU units, expansion units, and I/O units.

1-3 Structure and Operation

Explains CPU Unit internal structure, operating modes, and startup behavior.

1-6 Preparation for Operation

Outlines essential steps for initial system setup and Programming Console operation.

SECTION 2 Unit Components and Specifications

2-1 Specifications

Provides detailed technical specifications, including general, I/O, and power supply unit specs.

2-2 Unit Components

Describes physical components of CPU units, expansion I/O units, and various adapter units.

SECTION 3 Installation and Wiring

3-1 Design Precautions

Essential design considerations for power supply wiring, voltage, and safety circuits like interlocks.

3-3 Installing the CPM2C

Covers the procedure for installing the CPM2C unit and connecting expansion units.

3-4 Wiring and Connections

Provides fundamental information on wiring power supply, I/O terminals, connectors, and communication devices.

SECTION 4 Using a Programming Console

4-1 Using a Programming Console

Information on connecting and operating the Programming Console, including compatible models and mode switching.

4-2 Programming Console Operations

Details various operations like clearing memory, editing programs, searching, and monitoring functions.

4-3 Programming Example

Demonstrates writing a program using the console, including preparatory steps and a test run.

SECTION 5 Test Runs and Error Processing

5-1 Initial System Checks and Test Run Procedure

Outlines initial system checks, test runs, and flash memory precautions.

5-2 Self-diagnostic Functions

Explains error identification via messages, flags, and codes for accurate troubleshooting.

5-5 Troubleshooting Flowcharts

Provides visual flowcharts for diagnosing and resolving operational errors like power supply or I/O issues.

5-7 Battery Replacement

Details the procedure for replacing the backup battery with necessary safety warnings.

SECTION 6 Expansion Memory Unit

6-1 Overview

Introduces the Expansion Memory Unit, its memory areas, and general precautions for use.

6-2 Specifications and Nomenclature

Lists specifications and identifies components of the Expansion Memory Unit, including supported PCs and connectors.

6-3 Handling

Covers unit handling, including EEPROM mounting, PC connections, and program upload/download procedures.

SECTION 7 Simple Communications Unit

7-1 Introduction

Introduces the unit's features, system configuration, and component data processing methods.

7-3 Preparation for Operation

Details procedures for unit connections, switch settings, PC setup, and component configuration.

7-7 Error Processing

Explains detection and processing of fatal and non-fatal errors specific to the Simple Communications Unit.

7-9 Example Application

Demonstrates system configuration and DM settings for using the unit with temperature controllers.