Product Introduction and System Integration

The ProSoft ILX69-PBS provides a dedicated PROFIBUS communication interface for CompactLogix automation systems. Its primary role is to act as a slave device on a PROFIBUS DP network, allowing an external Master to exchange data with the Rockwell controller.

On the CompactLogix side, the module uses the 1769 backplane to transfer cyclic process data between the communication interface and the controller. On the fieldbus side, an isolated RS-485 interface handles communication with the PROFIBUS Master. This arrangement allows both automation platforms to retain their existing control structures while exchanging the information required for coordinated operation.

The module also supports DPV1 acyclic communication, which provides access to additional messaging and diagnostic functions beyond ordinary cyclic I/O exchange. Its Ethernet diagnostic interface offers another way to investigate communication status and troubleshoot integration problems.

During commissioning, engineers should confirm the controller firmware, module profile, PROFIBUS station address, baud rate, GSD configuration, and I/O data mapping. The selected data lengths must match the configuration expected by the external Master. Proper cable shielding and bus termination are also important for stable communication.

For plants maintaining a combination of Rockwell and PROFIBUS-based equipment, the ILX69-PBS provides a straightforward method of connecting CompactLogix control systems to established fieldbus networks.

Technical Specifications

Parameter	Description
Brand	ProSoft Technology
Model	ILX69-PBS
Product Type	PROFIBUS DP Slave Communication Module
Platform	Rockwell Automation CompactLogix
Compatible Backplane	1769 CompactLogix
Communication Protocol	PROFIBUS DPV0 / DPV1
Operating Mode	PROFIBUS DP Slave
Communication Controller	netX 100
Maximum Cyclic Input Data	244 bytes
Maximum Cyclic Output Data	244 bytes
Maximum Acyclic Data	240 bytes per telegram
PROFIBUS Interface	Isolated RS-485
PROFIBUS Connector	9-pin female D-sub
Supported Baud Rates	9.6 kbps to 12 Mbps
Baud Rate Detection	Automatic
Ethernet Interface	10/100 Mbps
Ethernet Connector	RJ45
Ethernet Function	Remote diagnostics and troubleshooting
Isolation Voltage	500 VDC from backplane
Supply Voltage	5 VDC ±5%
Typical Current Consumption	570 mA at 5 VDC
Operating Temperature	0°C to +60°C
Storage Temperature	-40°C to +85°C
Relative Humidity	5% to 95%, non-condensing
Dimensions	131.6 x 39.3 x 92.1 mm
Weight	0.152 kg / 0.34 lb

Recommended Related Models

Model	Product Description
ILX69-PBM	ProSoft PROFIBUS DP Master Communication Module for CompactLogix
MVI69-PDPS	ProSoft PROFIBUS DP Slave Communication Module for CompactLogix
MVI69-PDPMV1	ProSoft PROFIBUS DPV1 Master Communication Module for CompactLogix
ILX56-PBS	ProSoft PROFIBUS DP Multi-Slave Communication Module for ControlLogix

Popular Related Models

Model	Product Description
MVI69-MNET	ProSoft Modbus TCP/IP Communication Module for CompactLogix
MVI69E-MBS	ProSoft Modbus Serial Communication Module for CompactLogix
MVI69-DFNT	ProSoft EtherNet/IP Communication Module for CompactLogix
1769-L32E	Allen Bradley CompactLogix Controller
1769-L36ERM	Allen Bradley CompactLogix Controller
1769-IF8	Allen Bradley CompactLogix 8-Point Analog Input Module
1769-OB16	Allen Bradley CompactLogix 16-Point Digital Output Module

Note: The ILX69-PBS is a CompactLogix 1769 platform module, not a ControlLogix 1756 module. Verify controller compatibility, firmware revision, GSD configuration, and PROFIBUS data mapping before installation or replacement.

Applications

The ILX69-PBS is suitable for automation projects that require a CompactLogix controller to communicate as a PROFIBUS slave.

PLC Integration: Connects CompactLogix controllers to external PROFIBUS DP Master systems.
Distributed I/O Communication: Exchanges process inputs, outputs, and status information with PROFIBUS-based control equipment.
Siemens System Connectivity: Supports data exchange between Rockwell CompactLogix platforms and Siemens PLC networks.
Drive and Motor Control: Transfers control commands and operating feedback between the controller and compatible PROFIBUS drives.
Legacy Network Integration: Allows existing PROFIBUS Master systems to communicate with newer CompactLogix installations.
Remote Diagnostics: Uses its Ethernet interface to provide access to diagnostic and troubleshooting information.

Advantages and Key Features

PROFIBUS DPV1 Slave Communication

The module supports cyclic DPV0 data exchange and DPV1 acyclic messaging. This allows the CompactLogix controller to exchange both routine process data and additional diagnostic or device information with the PROFIBUS Master.

CompactLogix Backplane Integration

The ILX69-PBS installs directly into a compatible 1769 system and communicates with the controller through the CompactLogix backplane. Its standard I/O module interface simplifies integration into the controller project.

Flexible Data Exchange

It supports up to 244 bytes of cyclic input data and 244 bytes of cyclic output data. Data mapping can be configured in the controller project or transferred from the PROFIBUS Master, depending on the application setup.

Ethernet Diagnostic Interface

A separate Ethernet port supports remote diagnostics and troubleshooting. This helps maintenance personnel investigate module status and communication problems without relying exclusively on the PROFIBUS connection.

Broad PROFIBUS Compatibility

The module supports transmission rates from 9.6 kbps to 12 Mbps and has been tested with PROFIBUS Masters from multiple manufacturers.

Integrated Configuration Support

An Add-On Profile is available for Studio 5000 and RSLogix 5000, helping engineers configure the module and organize cyclic I/O data within the CompactLogix application.

Technical FAQs

Q1: What is the primary function of the ILX69-PBS?

The ILX69-PBS allows a CompactLogix controller to operate as a PROFIBUS DPV1 slave. It exchanges cyclic process data and supported acyclic messages with an external PROFIBUS Master.

Q2: Which controller platform is compatible with this module?

It is designed for Rockwell Automation CompactLogix 1769 systems. Compatibility should be checked against the specific controller model, firmware revision, and project configuration before installation.

Q3: What is the difference between DPV0 and DPV1 communication?

DPV0 provides cyclic input and output data exchange between the PROFIBUS Master and Slave. DPV1 extends this communication with acyclic read/write services and alarm handling for additional diagnostic and parameter information.

Q4: What is the maximum cyclic data capacity?

The module supports up to 244 bytes of cyclic input data and 244 bytes of cyclic output data. The actual configured data size depends on the PROFIBUS Master configuration and application requirements.

Q5: Which PROFIBUS baud rates are supported?

Supported transmission rates range from 9.6 kbps to 12 Mbps, including intermediate standard PROFIBUS speeds. Automatic baud rate detection is also supported.

Q6: Can the module be configured through Studio 5000?

Yes. The ILX69-PBS appears as a standard I/O module in the CompactLogix project and can be configured using the supplied Add-On Profile in Studio 5000 or RSLogix 5000.

Q7: What is the purpose of the Ethernet port?

The Ethernet interface is primarily intended for remote diagnostics and troubleshooting. It provides an additional access path for monitoring the module without using the PROFIBUS network connection.

Q8: Does the ILX69-PBS support electrical isolation?

Yes. Its PROFIBUS RS-485 interface is galvanically isolated from the CompactLogix backplane, with a specified isolation voltage of 500 VDC. This helps reduce the impact of electrical potential differences between connected equipment.

Q9: What should be checked if the PROFIBUS Master cannot exchange data with the module?

Check the slave address, baud rate, GSD configuration, I/O data length, bus termination, cable wiring, and PROFIBUS connector. Also inspect the module's COM and SYS indicators and review diagnostic information through the Ethernet interface.

Q10: Can the ILX69-PBS replace an ILX56-PBS?

No, not as a direct hardware replacement. The ILX69-PBS is designed for the CompactLogix 1769 platform, whereas the ILX56-PBS is intended for ControlLogix systems. Their chassis interfaces, dimensions, power requirements, and configuration procedures differ.

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