ProSoft ILX69-PBS – PROFIBUS DP Slave Module for CompactLogix (1769)

If you need your CompactLogix controller to talk reliably to existing PROFIBUS DP equipment, the ProSoft ILX69-PBS is a straightforward way to do it. It slots directly into the 1769 backplane and makes the controller appear as a PROFIBUS DP-V0 slave to a master on the bus. From my experience, this setup is ideal when a plant is standardizing on CompactLogix, but still has PROFIBUS drives, remote I/O (like ET200), or legacy process skids that you can’t replace yet. You might notice that commissioning goes quicker than expected—the module supports standard GSD-based configuration and typically runs at any PROFIBUS baud rate up to 12 Mbps with auto-detection.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: In-stock items ship in 1 week; no more than one month at the latest
• Payment: 50% advance payment, full payment prior to delivery
• Express options: FedEx, UPS, DHL

Key Features

• CompactLogix 1769 in-chassis integration – Installs as a standard 1769 module; no external gateway or extra power supply typically required.
• PROFIBUS DP-V0 Slave – Presents the controller as a single DP slave to the master, suited for drives, remote I/O, and packaged skids.
• Cyclic data up to 244/244 bytes – Supports up to 244 bytes input and 244 bytes output process data, which covers most DP applications.
• Auto-baud 9.6 kbps to 12 Mbps – Adapts to typical PROFIBUS networks without manual baud configuration.
• GSD-based configuration – Standard GSD workflow helps speed up commissioning and matches typical maintenance practices.
• Studio 5000 friendly – Add-On Profile/AOI support is commonly used, making tag handling and diagnostics more intuitive in many cases.
• Industrial temperature rating – Designed for control cabinets; stable operation in typical plant environments.

Technical Specifications

Related & Supporting Products

• ProSoft ILX69-PBM – PROFIBUS DP Master for CompactLogix. Choose this when your CompactLogix must be the master on the DP network rather than a slave.
• ProSoft PS69-DPS – Earlier-generation PROFIBUS DP Slave for 1769; ILX69-PBS is the modern option with improved Studio 5000 integration.
• Allen‑Bradley 1769-ECR / 1769-ECL – Right/Left end caps required for proper 1769 bus termination in DIN-rail installations.
• PROFIBUS DP connectors & cable – 9‑pin D‑sub connectors with integrated termination and standard DP cable rated to 12 Mbps help ensure reliable signal integrity.
• CompactLogix power supplies (e.g., 1769-PA2 / 1769-PB2) – Verify backplane current budget; the ILX69-PBS typically draws higher current than standard I/O modules.

Installation & Maintenance

• Cabinet & mounting – Install in an IP20 control cabinet on DIN rail (or panel) with proper 1769 end caps. Maintain vertical clearance for airflow; avoid hot zones near power supplies.
• Power & grounding – Check the backplane power budget; bond cabinet ground and shield PROFIBUS cable at one end as per site practice to minimize noise.
• PROFIBUS wiring – Use DP-rated cable; keep segment lengths within baud-specific limits; terminate the first and last node only. From my experience, using connectors with built-in termination avoids most startup issues.
• Addressing & configuration – Configure via the DP master using the ProSoft GSD file; map cyclic I/O to controller tags using the provided AOI/AOP in Studio 5000.
• Routine maintenance – Periodically inspect connectors, cable shields, and terminators; keep firmware and AOP files current; back up the project after any I/O mapping changes.
• Safety – De-energize before inserting/removing 1769 modules. Observe ESD handling to protect the backplane and communication circuitry.

Quality & Certifications

• Certifications – CE, UL/cUL (industrial control equipment), RoHS compliant
• Manufacturer Warranty – Typically 1 year; our sales warranty covers 365 days as stated above
• Field feedback – Users often remark that mixed-vendor lines (Siemens DP I/O with CompactLogix) stabilize quickly after correct termination and AOP updates.

One thing I appreciate is how predictable the startup is—once the GSD is loaded and the byte counts match, the DP master usually picks up the ILX69-PBS without fuss. If you’re migrating in phases, this module seems to be the least disruptive way to keep proven PROFIBUS assets online while moving control to CompactLogix.