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- IC695PBS301
- RX3i Fieldbus Slave Module
- USA
- 260 × 130 × 120 mm
- 1.36 kg
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Product Overview
The GE IC695PBS301 is an RX3i Fieldbus Slave Module designed to provide fieldbus-based connectivity between an industrial control system and external field devices or networked automation equipment. In distributed automation architectures, a fieldbus slave interface allows process data to be exchanged between the control system and devices located on a field network.
The module can serve as an important communication interface where distributed devices need to be integrated into an RX3i-based automation environment. Instead of wiring every field signal directly to a central controller, a fieldbus architecture can group devices on a communication network and transfer process information through a dedicated interface.
The specified dimensions of the GE IC695PBS301 are 260 × 130 × 120 mm, with a weight of approximately 1.36 kg.
Because fieldbus communication depends on both physical network quality and correct software configuration, successful installation requires attention to module mounting, power, network connections, device configuration, addressing, communication parameters, and diagnostics.
This guide provides a practical overview of the IC695PBS301, including its technical specifications, operating principle, system integration, installation, commissioning, troubleshooting, maintenance, and replacement procedures.
Product Identification
| Parameter | Specification |
|---|---|
| Manufacturer | GE |
| Product Family | PACSystems RX3i |
| Model | IC695PBS301 |
| Product Type | RX3i Fieldbus Slave Module |
| Primary Function | Fieldbus Slave Communication |
| Dimensions | 260 × 130 × 120 mm |
| Weight | 1.36 kg |
| Installation | RX3i Industrial Control System |
| Application | Distributed Automation |
| System Role | Fieldbus Communication Interface |
Technical Specifications
| Technical Item | Specification |
|---|---|
| Product Series | PACSystems RX3i |
| Part Number | IC695PBS301 |
| Module Type | Fieldbus Slave Module |
| Height | 260 mm |
| Width | 130 mm |
| Depth | 120 mm |
| Weight | Approximately 1.36 kg |
| Primary Function | Fieldbus Data Exchange |
| Network Role | Slave / Field Device Interface |
| Installation Environment | Industrial Control Cabinet |
| System Integration | RX3i Automation Architecture |
| Application | Distributed I/O and Fieldbus Communication |
What Is the GE IC695PBS301?
The IC695PBS301 functions as a fieldbus slave interface within an industrial automation architecture.
A fieldbus network allows multiple distributed devices to exchange information through a common communication infrastructure.
A simplified architecture can be represented as:
Central Controller
↓
Fieldbus Network
↓
IC695PBS301
↓
Field Devices / Remote Stations
The communication path can also operate in the opposite direction:
Field Devices
↓
IC695PBS301
↓
Fieldbus Network
↓
Controller
This allows process information to be exchanged between the control application and distributed field equipment.
Fieldbus Slave Operating Principle
The module’s operation can be understood through several stages.
1. Network Connection
The module is connected to the designated fieldbus network.
2. Slave Identification
The control system identifies the module and its configured network characteristics.
3. Cyclic Data Exchange
Process information is exchanged according to the configured communication architecture.
4. Input Data Processing
Information originating from field devices can be transferred toward the controller.
5. Output Data Processing
Control information from the controller can be transmitted toward the field devices.
6. Diagnostic Monitoring
Communication and module status can be monitored through available system diagnostics.
Why Use a Fieldbus Slave Module?
Industrial systems frequently contain sensors, actuators, drives, remote I/O stations, and other devices distributed throughout a facility.
Traditional point-to-point wiring can result in:
- Large cable quantities
- Complex cabinet layouts
- Long field wiring runs
- Increased installation effort
- Difficult troubleshooting
- Limited expansion flexibility
A fieldbus architecture can consolidate many device communications onto a structured network.
The IC695PBS301 can therefore serve as an interface between an RX3i control environment and a distributed fieldbus network.
Industrial Applications
The GE IC695PBS301 can be considered for automation architectures involving:
- Factory automation
- Distributed machine control
- Process automation
- Production lines
- Packaging systems
- Material handling
- Conveyor systems
- Water and wastewater systems
- Chemical processing
- Power-related automation
- Oil and gas facilities
- Food and beverage production
- Pharmaceutical manufacturing
Its actual application depends on the fieldbus architecture and the devices connected to the system.
System Integration
A typical system may contain:
| Component | Typical Function |
|---|---|
| RX3i CPU | Central control processing |
| IC695PBS301 | Fieldbus slave communication |
| RX3i Power Supply | System power |
| RX3i Backplane | Module mounting and system interconnection |
| Fieldbus Master | Network control |
| Field Devices | Sensors and actuators |
| Remote I/O | Distributed signal processing |
| Drives | Motor control |
| Engineering Workstation | Configuration and diagnostics |
| Network Cabling | Fieldbus communication |
The exact architecture should be based on the project’s validated hardware and communication design.
Installation Guide
1. Verify the Module
Confirm the product identification:
GE IC695PBS301 RX3i Fieldbus Slave Module
Check the part number against the system documentation.
2. Inspect the Module
Before installation, inspect the module for:
- Physical damage
- Connector damage
- Housing cracks
- Bent interfaces
- Contamination
- Signs of overheating
Do not install a damaged module.
3. Confirm the Fieldbus Architecture
Before connecting the module, verify:
- Fieldbus type
- Master device
- Slave configuration
- Network topology
- Device addressing
- Required communication parameters
- Cable type
- Termination arrangement
The fieldbus master and slave configuration must correspond to the actual network design.
4. Prepare the Control Cabinet
The specified dimensions are:
260 × 130 × 120 mm
Provide sufficient space for:
- Module installation
- Network cabling
- Power connections
- Adjacent modules
- Ventilation
- Maintenance access
Avoid installing the equipment in areas exposed to excessive heat, moisture, corrosive substances, or strong vibration.
5. Back Up the Configuration
For an existing system, back up:
- PLC application
- Hardware configuration
- Fieldbus configuration
- Device parameters
- Network addressing information
- Diagnostic records
This is especially important before replacing a fieldbus communication module.
6. Shut Down the System
Before installation:
- Stop the controlled process.
- Follow the approved shutdown procedure.
- Remove power where required.
- Verify the equipment is safe to service.
- Apply lockout/tagout procedures when applicable.
7. Install the Module
Install the IC695PBS301 in its designated system position.
Verify:
- Correct orientation
- Correct slot or mounting position
- Proper alignment
- Secure seating
- Proper mechanical retention
Do not force the module into place.
8. Connect the Fieldbus Network
Connect the fieldbus cable according to the approved network design.
Check:
- Correct communication port
- Correct cable type
- Connector security
- Cable routing
- Shielding
- Grounding
- Termination
Incorrect termination or poor physical connections can cause intermittent communication problems.
9. Configure the Slave
Configure the module according to the validated fieldbus system design.
Typical configuration items may include:
- Slave address
- Device identification
- Data mapping
- Communication parameters
- I/O data size
- Diagnostic behavior
10. Restore Power
After installation and connection checks:
- Restore power.
- Allow the system to initialize.
- Observe status indicators.
- Check fieldbus communication.
- Review controller diagnostics.
Fieldbus Network Installation Considerations
Cable Quality
Use suitable industrial communication cable for the fieldbus architecture.
Cable Routing
Keep communication cables away from high-current and high-noise circuits whenever practical.
Termination
Ensure network termination is installed according to the fieldbus topology.
Shielding
Follow the recommended shielding arrangement for the selected fieldbus network.
Grounding
Verify appropriate grounding and bonding practices.
Connector Security
A loose connector can cause intermittent communication and difficult-to-reproduce failures.
Commissioning Procedure
Step 1 — Physical Inspection
Confirm that the IC695PBS301 and all fieldbus connections are correctly installed.
Step 2 — Power Verification
Verify stable system power.
Step 3 — Module Startup
Power up the system and allow the module to initialize.
Step 4 — Slave Recognition
Confirm that the fieldbus master recognizes the slave module.
Step 5 — Configuration Verification
Compare the actual network configuration with the engineering configuration.
Step 6 — Communication Test
Verify cyclic or required data exchange between the master and slave.
Step 7 — Input Verification
Confirm that field input information reaches the controller correctly.
Step 8 — Output Verification
Command representative outputs and verify field-device response.
Step 9 — Diagnostic Check
Review fieldbus and controller diagnostics.
Step 10 — Process Test
Operate the process under controlled conditions and monitor communication stability.
Troubleshooting Guide
Fault 1 — IC695PBS301 Does Not Start
Possible causes:
- Power problem
- Incorrect installation
- Poor backplane connection
- Hardware fault
- Configuration problem
Recommended Checks
- Verify system power.
- Check module seating.
- Inspect the backplane.
- Observe status indicators.
- Review controller diagnostics.
Fault 2 — Fieldbus Master Does Not Detect the Slave
Possible causes:
- Incorrect slave address
- Incorrect configuration
- Network cable problem
- Incorrect termination
- Communication hardware failure
Verify the slave configuration against the actual network.
Fault 3 — Fieldbus Communication Is Intermittent
Possible causes:
- Loose connector
- Damaged cable
- Poor shielding
- Incorrect termination
- Electrical interference
- Grounding problem
- Unstable power
Inspect the physical network before changing software configuration.
Fault 4 — Slave Is Detected but Data Is Not Updating
Possible causes:
- Incorrect I/O data configuration
- Data mapping mismatch
- Communication parameter problem
- Field device problem
- Application configuration issue
Check:
Field Device → Slave → Fieldbus Network → Master → PLC Application
Fault 5 — Input Data Is Incorrect
Possible causes:
- Incorrect channel mapping
- Device configuration error
- Sensor problem
- Wiring issue
- Data interpretation problem
Compare the field signal with the value received by the controller.
Fault 6 — Output Commands Do Not Reach the Field Device
Possible causes:
- Fieldbus output configuration
- Network communication failure
- Incorrect data mapping
- Output device problem
- Field wiring problem
Test the communication path step by step.
Fault 7 — Communication Drops When Motors Start
Possible causes:
- Electromagnetic interference
- Poor cable routing
- Shielding problems
- Grounding problems
- Power disturbance
Check whether communication failures correlate with the operation of motors, drives, contactors, or other high-power equipment.
Fault 8 — Slave Frequently Enters a Fault State
Possible causes:
- Network instability
- Configuration mismatch
- Communication timeout
- Power interruption
- Hardware degradation
Record the diagnostic sequence rather than repeatedly resetting the module.
Fault 9 — Communication Fails After PLC Configuration Changes
Possible causes:
- Incorrect fieldbus configuration
- Wrong data length
- Address conflict
- Incorrect device parameters
- Configuration mismatch
Restore the last known-good configuration and compare changes systematically.
Fault 10 — Communication Fails After Module Replacement
Possible causes:
- Incorrect configuration
- Wrong address
- Incorrect network wiring
- Incompatible configuration
- Damaged communication cable
Verify both physical connections and software configuration.
Diagnostic Workflow
Use the following troubleshooting sequence:
Power Supply
↓
RX3i Backplane
↓
IC695PBS301
↓
Fieldbus Cable
↓
Termination
↓
Slave Configuration
↓
Fieldbus Master
↓
I/O Data Exchange
↓
PLC Application
↓
Field Devices
This structured process helps determine whether the fault is caused by hardware, network infrastructure, configuration, or field equipment.
Preventive Maintenance
Module Inspection
Inspect:
- Housing
- Connectors
- Mounting
- Status indicators
- Signs of overheating
Network Inspection
Check:
- Cable condition
- Connector security
- Shielding
- Grounding
- Termination
- Network topology
Configuration Inspection
Maintain:
- Current hardware configuration
- Fieldbus configuration
- Device parameters
- Addressing records
- Network documentation
Environmental Inspection
Monitor:
- Temperature
- Dust
- Moisture
- Vibration
- Electrical interference
Preventive Maintenance Checklist
| Inspection Item | Recommended Action |
|---|---|
| IC695PBS301 | Inspect physical condition |
| Module Seating | Verify secure installation |
| Fieldbus Cable | Inspect for damage |
| Connectors | Check connection security |
| Network Termination | Verify correct arrangement |
| Shielding | Inspect cable shielding |
| Grounding | Verify grounding practices |
| Slave Address | Confirm configuration |
| I/O Data | Verify expected values |
| Diagnostic Logs | Review communication events |
| Cabinet Environment | Monitor operating conditions |
| Configuration Backup | Maintain current copy |
Fieldbus Slave Module Replacement Procedure
Step 1 — Back Up Configuration
Save:
- PLC program
- Hardware configuration
- Fieldbus configuration
- Device parameters
- Network documentation
Step 2 — Record Network Information
Document:
- Slave address
- Network connections
- Cable routing
- Termination
- Device configuration
Step 3 — Stop the Process
Place the controlled equipment in a safe state.
Step 4 — Remove Power
Follow the approved shutdown and lockout/tagout procedure.
Step 5 — Label Connections
Identify all fieldbus and power connections before removal.
Step 6 — Remove the Existing Module
Disconnect the module and carefully remove it.
Step 7 — Inspect the Backplane
Check the mounting and electrical interface.
Step 8 — Install the Replacement
Install the replacement IC695PBS301.
Step 9 — Reconnect the Network
Restore all communication connections.
Step 10 — Restore Configuration
Load the validated fieldbus and controller configuration.
Step 11 — Restore Power
Power up the system.
Step 12 — Verify Slave Recognition
Confirm that the fieldbus master recognizes the module.
Step 13 — Verify Data Exchange
Check input and output data.
Step 14 — Test Field Devices
Operate representative field devices.
Step 15 — Return to Service
Return the process to normal operation after all communication and I/O checks are satisfactory.
Key Advantages
- Designed for RX3i industrial automation architectures
- Provides fieldbus slave communication functionality
- Supports distributed automation systems
- Facilitates field-level data exchange
- Can reduce extensive point-to-point field wiring
- Supports integration of distributed field devices
- Specified 260 × 130 × 120 mm dimensions
- Approximately 1.36 kg weight
- Suitable for industrial control environments
- Supports structured fieldbus-based system architecture
Frequently Asked Questions
What is the GE IC695PBS301?
The GE IC695PBS301 is an RX3i Fieldbus Slave Module designed to provide fieldbus communication between an RX3i-based automation system and compatible distributed field equipment.
What are the dimensions?
The specified dimensions are:
260 × 130 × 120 mm
What is the weight?
Approximately 1.36 kg.
What is the purpose of a fieldbus slave module?
It provides an interface through which field devices or distributed automation equipment can exchange process data with a fieldbus master and the associated control system.
Why is the slave not detected?
Check power, network cabling, termination, slave addressing, configuration, and fieldbus master status.
Why is fieldbus communication intermittent?
Possible causes include cable damage, loose connectors, electrical interference, incorrect termination, shielding problems, grounding issues, or unstable power.
Why is the slave detected but I/O data is incorrect?
Check data mapping, I/O configuration, field-device signals, application configuration, and communication parameters.
What should be checked after replacing the module?
Verify physical installation, network wiring, slave addressing, configuration, data exchange, diagnostics, and field-device operation.
Conclusion
The GE IC695PBS301 RX3i Fieldbus Slave Module is designed to provide a communication interface between an RX3i automation architecture and distributed fieldbus equipment. With specified dimensions of 260 × 130 × 120 mm and a weight of approximately 1.36 kg, it is intended for industrial control environments where distributed communication and field-level data exchange are required.
A fieldbus-based architecture can reduce extensive point-to-point wiring while allowing sensors, actuators, remote I/O, drives, and other industrial devices to be organized into a structured communication network. The IC695PBS301 can therefore serve as an important interface within a distributed automation system.
Successful installation depends on correct module mounting, stable power, suitable network cabling, correct termination, appropriate addressing, and accurate fieldbus configuration. Commissioning should include slave recognition, communication verification, input and output testing, and diagnostic review.
When troubleshooting the IC695PBS301, technicians should examine the entire communication chain rather than assuming that the slave module itself is defective. Power, backplane connections, network cabling, termination, configuration, fieldbus master operation, I/O mapping, and field devices should all be considered.
With proper configuration management, preventive maintenance, network inspection, and systematic fault diagnosis, the IC695PBS301 can support reliable distributed communication within demanding industrial automation applications.