BAILEY IMMFP01 Replacement Multi Function Processor

The BAILEY IMMFP01 Replacement Multi Function Processor is the first-generation Multi-Function Processor (MFP) module of the Bailey INFI 90® distributed control system. It is a standalone multi-loop controller that executes control logic, performs data acquisition, and exchanges information over the INFI-NET communication highway — the workhorse processor of INFI 90 cabinets.

Key Features

• Standalone multi-loop controller with data acquisition and information processing
• 32-bit processor (16-bit external bus) running at 16 MHz
• High-speed redundancy link supporting 1:1 redundant MFP pairs
• Three operating modes: execute, configure, and error
• Serial station-support port plus two general-purpose serial channels
• Direct memory access (DMA) circuitry for the I/O expander bus
• Interfaces to analog/digital I/O modules via the I/O expander bus
• Connects to INFI-NET via the module’s communication port / network interface modules
• Programmed with INFI 90 function-code configuration (function blocks; later MFP generations also support C, Basic, Batch, and Ladder)

Technical Specifications

• Type Designation: IMMFP01 (MFP01)
• Product Type: Multi-Function Processor Module (MFP)
• System: Bailey INFI 90® distributed control system
• Processor: 32-bit CPU (16-bit external bus), 16 MHz
• Memory: 256 KB RAM; 64 KB NVRAM (non-volatile); program storage in ROM (reference values per service data)
• Supply Voltage: +5 VDC @ 2 A (approx. 10 W typical)
• Serial Ports: 2 × RS-232-C, or 1 × RS-232-C + 1 × RS-485; up to 19.2 kbaud
• Station Support: Serial port for engineering station connection
• Redundancy: High-speed redundancy link (1:1 MFP redundant operation)
• Operating Modes: Execute / Configure / Error
• I/O Interface: I/O expander bus (auto/DMA) to INFI 90 I/O modules; supports up to 64 I/O modules (service data)
• Communication: INFI-NET highway via network interface modules (e.g., INNIS01)
• Mounting: One slot in a standard INFI 90 Module Mounting Unit (MMU)
• Ambient Temperature: 0…70 °C
• Dimensions: approx. 3.7 × 31.4 × 17.8 cm (H×W×D reference values)
• Origin: United States

Installation Notes

1. De-energize the INFI 90 power system before inserting or removing the module from the MMU.
2. Install the IMMFP01 into a processor slot of the Module Mounting Unit; seat the backplane connector fully and secure the module.
3. For redundant operation, pair two MFPs via the redundancy link and configure the redundant pair in the engineering toolset.
4. Connect the station-support serial port to the engineering workstation (up to 19.2 kbaud); terminate RS-485 links per network rules.
5. Configure control logic in function-code language using the INFI 90 configuration software; download and place the processor in execute mode.
6. Verify module status LEDs and error-mode indications after commissioning; confirm I/O expander bus communication with installed I/O modules.

Common Questions

What is the IMMFP01’s role in the INFI 90 system?

It is the control processor: it runs the configured control strategies (function codes), scans and conditions process I/O, and communicates with operator stations and other processors over INFI-NET.

Can the IMMFP01 be used redundantly?

Yes — the MFP supports a high-speed redundancy link for 1:1 redundant pairs, so a faulty processor transfers control to its partner without process interruption.

What programming language does it use?

INFI 90 MFP modules are configured in function-code language (function blocks). Later MFP generations (e.g., IMMFP03) additionally support C, Basic, Batch, and Ladder per the official instruction.

What power does the module need?

+5 V DC at approximately 2 A (about 10 W) from the INFI 90 backplane.