ABB Bailey IIDOP04A Network Module

Module Overview

This network module connects operator workstations to Bailey INFI 90 controllers. You can install ABB Bailey IIDOP04A directly into any VME rack slot of INFI 90 systems. The unit manages data exchange between the process control network and display stations. It formats plant data for easy operator visualization.

Technical Specifications

Parameter	Value
Dimensions (W x H x D)	233 mm x 160 mm x 20 mm
Weight	0.52 kg
Network interface	10/100Base-TX Ethernet (RJ-45)
Serial interface	RS-232/485 (9-pin D-sub)
Supported protocols	Bailey GOP, Modbus RTU, Modbus TCP
VMEbus interface	32-bit master/slave
Maximum data rate	100 Mbps Ethernet, 115.2 kbps serial
Data buffering	2 MB SRAM
Configuration port	RS-232 (front panel)
Status indicators	10 LEDs (network, power, comm status)
Power requirements	5V DC at 1.5A from VME backplane
Total onboard components	398 discrete parts
Energy storage type	Tantalum and electrolytic capacitors
Energy storage rating	890 µF at 16V DC
Operating temperature	0°C to +55°C

Board Layout and Components

The PCB integrates dual communication processors for independent protocol handling. Two megabytes of SRAM buffer process data before network transmission. Moreover, 398 discrete components include memory controllers and bus interface logic. Tantalum capacitors filter noise on all processor power rails. Consequently, the module delivers clean data to operator displays without corruption.

Installation Process

You can mount ABB Bailey IIDOP04A into any standard VMEbus rack slot. The backplane connectors supply power and provide VMEbus access to controller data. Furthermore, front panel ports connect to Ethernet switches and serial devices. Configuration software sets communication parameters and data mapping easily.

Performance Advantages

This module translates between Bailey GOP protocol and standard Modbus formats. The dual-port design connects to both Ethernet and serial operator panels. Therefore, legacy workstations integrate with modern INFI 90 systems seamlessly. The 2 MB buffer also prevents data loss during peak network traffic.

Safety and Compliance

ABB Bailey IIDOP04A meets CE and RoHS industrial standards. The board discharges stored energy below 3V within eight seconds. Hence, technicians face minimal electrical risk during installation or replacement.