Omron CJ1W-AD041-V1 User Manual

79
SECTION 3
CJ-series Analog Input Units (CJ1W-AD041-V1/081-V1)
This section explains how to use the CJ1W-AD041-V1/081-V1 Analog Input Unit.
3-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
3-1-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
3-1-2 Input Function Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
3-1-3 Input Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
3-2 Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
3-2-1 Procedure Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
3-3 Components and Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
3-3-1 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3-3-2 Unit Number Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3-3-3 Operation Mode Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
3-3-4 Voltage/Current Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
3-4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
3-4-1 Terminal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
3-4-2 Internal Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
3-4-3 Voltage Input Disconnection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
3-4-4 Input Wiring Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
3-4-5 Input Wiring Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
3-5 Exchanging Data with the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
3-5-1 Outline of Data Exchange. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
3-5-2 Unit Number Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
3-5-3 Special I/O Unit Restart Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
3-5-4 Fixed Data Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
3-5-5 I/O Refresh Data Allocations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
3-6 Analog Input Functions and Operating Procedures . . . . . . . . . . . . . . . . . . . . 106
3-6-1 Input Settings and Conversion Values . . . . . . . . . . . . . . . . . . . . . . . 106
3-6-2 Conversion Time/Resolution Setting . . . . . . . . . . . . . . . . . . . . . . . . 108
3-6-3 Mean Value Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
3-6-4 Peak Value Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
3-6-5 Input Disconnection Detection Function . . . . . . . . . . . . . . . . . . . . . 113
3-7 Adjusting Offset and Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
3-7-1 Adjustment Mode Operational Flow . . . . . . . . . . . . . . . . . . . . . . . . 114
3-7-2 Input Offset and Gain Adjustment Procedures. . . . . . . . . . . . . . . . . 116
3-8 Handling Errors and Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
3-8-1 Indicators and Error Flowchart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
3-8-2 Alarms Occurring at the Analog Input Unit . . . . . . . . . . . . . . . . . . . 124
3-8-3 Errors in the CPU Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
3-8-4 Restarting Special I/O Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
3-8-5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127

Omron CJ1W-AD041-V1 Specifications

General

Brand	Omron
Model	CJ1W-AD041-V1
Category	I/O Systems
Language	English

Summary

3-1 Specifications

3-1-1 Specifications

Detailed technical specifications of the CJ-series analog input units.

3-1-2 Input Function Block Diagram

Illustrates the internal functional blocks and signal flow of the analog input unit.

3-1-3 Input Specifications

Defines the input ranges, accuracy, and conversion parameters for analog signals.

3-2 Operating Procedure

3-2-1 Procedure Examples

Provides step-by-step examples for common operating procedures of the unit.

3-3 Components and Switch Settings

3-3-1 Indicators

Explains the meaning and status of the LED indicators on the analog input unit.

3-3-2 Unit Number Switches

Details how unit number switches configure data allocation in the CPU Unit.

3-3-3 Operation Mode Switch

Describes setting the unit's operational mode (normal/adjustment) via DIP switches.

3-3-4 Voltage/Current Switch

Explains how to switch input type between voltage and current using a physical switch.

3-4 Wiring

3-4-1 Terminal Arrangement

Shows the physical layout and signal assignment of the unit's terminal block.

3-4-2 Internal Circuitry

Diagrams illustrating the internal electronic design and signal processing circuits.

3-4-3 Voltage Input Disconnection

Discusses potential issues and countermeasures for voltage input disconnection scenarios.

3-4-4 Input Wiring Example

Provides a practical example of how to wire analog input signals to the unit.

3-4-5 Input Wiring Considerations

Offers advice for optimal wiring practices to ensure signal integrity and prevent noise.

3-5 Exchanging Data with the CPU Unit

3-5-1 Outline of Data Exchange

Explains the fundamental methods of data transfer between the CPU and analog input units.

3-5-2 Unit Number Setting

Details how unit number switches determine memory allocation for data exchange with the CPU.

3-5-3 Special I/O Unit Restart Bits

Describes the use of specific bits to restart the unit after configuration changes or errors.

3-5-4 Fixed Data Allocations

Outlines how initial settings like input signal ranges are stored and allocated in the DM Area.

3-5-5 I/O Refresh Data Allocations

Explains the allocation of I/O refresh data for real-time communication between units.

3-6 Analog Input Functions and Operating Procedures

3-6-1 Input Settings and Conversion Values

How to configure input usage and interpret the resulting analog-to-digital conversion values.

3-6-2 Conversion Time/Resolution Setting

Details how to adjust the unit's conversion speed and the resolution of the input signals.

3-6-3 Mean Value Processing

Explains the function of computing the average of multiple sampled analog input values.

3-6-4 Peak Value Hold Function

Describes how the unit can hold and output the maximum conversion value for each input.

3-6-5 Input Disconnection Detection Function

Details how the unit detects and signals when an analog input signal is disconnected.

3-7 Adjusting Offset and Gain

3-7-1 Adjustment Mode Operational Flow

Outlines the operational sequence for calibrating input offset and gain parameters.

3-7-2 Input Offset and Gain Adjustment Procedures

Provides step-by-step instructions for performing offset and gain calibration on inputs.

3-8 Handling Errors and Alarms

3-8-1 Indicators and Error Flowchart

Explains the unit's status indicators and the flowchart for error detection.

3-8-2 Alarms Occurring at the Analog Input Unit

Describes specific alarm conditions detected by the unit and their corresponding flags.

3-8-3 Errors in the CPU Unit

Details error conditions originating from the CPU Unit that affect the analog input unit's operation.

3-8-4 Restarting Special I/O Units

How to properly restart the analog input unit after configuration changes or errors.

3-8-5 Troubleshooting

Provides common problems, probable causes, and countermeasures for the analog input unit.