Technical Specifications

FAQ

1. What is the main function of the ABB Bailey INICI03?
The ABB Bailey INICI03 is a Cnet-to-Computer Communication Interface designed to provide a host computer or human system interface with access to the Cnet control network. It allows computer-based systems to obtain process and control-system point data from an ABB Bailey INFI 90 or Symphony system. The INICI03 is therefore used as a communication gateway between the DCS network and external computer applications.

2. Which ABB Bailey systems are compatible with the INICI03?
The INICI03 is designed for ABB Bailey INFI 90 and related INFI-NET/Symphony control-system architectures. It is also compatible with existing INFI 90 OPEN systems using the INFI-NET communication system. The exact configuration should be checked before replacement because the interface consists of several coordinated communication modules rather than a single standalone communication board.

3. What modules make up a typical INICI03 interface?
A typical INICI03 Cnet-to-Computer interface uses an INNIS01 Network Interface Module, INICT03 or INICT03A Cnet-to-Computer Transfer Module, and IMMPI01 Multifunction Processor Interface Module. The INNIS01 provides the connection to Cnet, the INICT03/INICT03A handles Cnet-to-computer data transfer, and the IMMPI01 provides the host computer interface, including RS-232-C and SCSI connections.

4. What communication interfaces are available on the INICI03?
The INICI03 supports host computer communication through RS-232-C serial communication and SCSI parallel communication. RS-232-C supports communication rates up to 19.2 kbaud, while the SCSI interface can provide substantially higher throughput, up to approximately 4 MB/s. The appropriate interface depends on the host computer hardware and the communication configuration used at the installation.

5. What should be checked if the INICI03 cannot communicate with the host computer?
Start by checking the physical connections between the host computer, IMMPI01, INICT03/INICT03A, and INNIS01. For serial communication, verify the RS-232-C cable, port selection, baud rate, and communication parameters. For SCSI communication, check the SCSI cable, termination, dedicated interface configuration, and host-side driver. The module status LEDs and Cnet communication status should also be checked to determine whether the problem is on the Cnet side or the computer side.

6. What role does the INNIS01 module play in the INICI03 interface?
The INNIS01 is the network interface portion of the INICI03 architecture. It provides the intelligent link between the system node and the Cnet control network. Cnet operates as a high-speed communication highway for Bailey control-system nodes, and the INNIS01 allows the Cnet-to-computer interface to access information from that network. Incorrect node or network configuration can therefore prevent the computer interface from communicating properly.

7. Can the INICI03 be used to access DCS point data from a host computer?
Yes. One of the primary purposes of the INICI03 is to provide a host computer with access to point data over Cnet. The host application communicates with the interface using the supported computer interface and sends commands to request or exchange system data. The available point capacity and actual data access depend on the installed INFI 90 configuration and the host-side communication software.

8. What precautions should be taken when replacing an ABB Bailey INICI03?
Before replacement, identify all modules belonging to the INICI03 interface and record their installation positions, node addresses, module settings, and communication configuration. Follow the site’s electrical isolation and maintenance procedures before removing any module. Check the INNIS01, INICT03/INICT03A, and IMMPI01 configuration carefully during installation. After replacement, verify Cnet communication first, then confirm host computer communication and point-data access to ensure the complete interface is operating correctly.