ABB IMMPI01 Multi-Function Processor Interface

The ABB IMMPI01, also cataloged as the IMMPI01 Multi-Function Processor Interface, operates as a dedicated hardware component for host computer to INICT03 communication within Bailey Infi 90 and Symphony Harmony networks.

Hardware Specifications

Backplane Bus & Deterministic Networking Capabilities

The module leverages dedicated microprocessor-driven communication circuitry designed to optimize backplane bus communication velocity and reduce interface latencies. When operating over the serial physical layer, the RS-232-C channels support configurable Data Terminal Equipment (DTE) or Data Communication Equipment (DCE) modes up to 19.2 kbaud. For high-throughput requirements, the integrated parallel SCSI interface accelerates deterministic I/O data transfers up to 4 MB/s, preserving I/O density scaling and maintaining firmware compatibility across distributed control system nodes.

Frequently Asked Questions

Q: How does the IMMPI01 module configure its RS-232-C port operational modes?

A: Hardware switch or jumper selections on the single printed circuit board define whether the serial port functions in Data Terminal Equipment (DTE) or Data Communication Equipment (DCE) mode prior to system initialization.

Q: What are the physical power connections required for backplane operation?

A: +5 VDC system power and power common enter the module strictly through the P1 card edge connector attached to the module mounting unit backplane. Connector P2 remains unused.

Q: How is the module linked directly to the INICT03 communication card?

A: Direct interface execution requires a ribbon cable assembly connected between the P6 header on the IMMPI01 printed circuit board and the matching interface port on the adjacent INICT03 module.

Field Installation Guidelines

• Power Down Sequence: Ensure system logic power to the Module Mounting Unit (MMU) is completely isolated prior to inserting or removing the card to prevent bus disruption.
• Grounding Standards: Verify the NTMP01 termination unit ground plane is properly bonded to cabinet earth ground using minimum 12 AWG wire to suppress common-mode electrical noise.
• Connector Engagement: Confirm that card edge connectors P1 and P3 fully seat into the backplane receptacles, and secure the front panel retaining screws to prevent vibration-induced signal loss.
• Cable Routing: Separate SCSI and RS-232-C field communication cabling from high-voltage AC lines or inductive motor leads by a minimum distance of 30 cm inside cable raceways.