Your question about Siemens S30810-Q2255-X IOPAX

The IOPAX (Input/Output Processor for SCSI and AlarmControl) board is a multi-function unit, and has the following tasks:

• Provides the SCSI bus to the hard disk (HD) and cartridge (CT) drives or SPC
• Operating status and alarm status display (7-segment display)
• Clock with battery backup
• V.24 monitor interface for tracer and control applications
• DIL switch for changing operating mode from IOPAX functions (standard) to IOPS functions (like previous IOPS board) and activating SIRIUS-Mode.

The IOPAX board is used for accessing the peripheral storage devices (CT, HD) of the service modules. Its main task is controlling the exchange of essential data between the service module common control and the peripheral storage devices. The IOPAX provides a multibus interface to the data processor (DP) and the interface processor (IP, MIP) and also the SCSI (small computer system interface) to the HD and CT, or any other type of data storage medium with an integrated SCSI. The board offers connections for up to 7 disk or cartridge drives via its SCSI bus.

• Transparent connection (multi-coupler) via front panel SCSI interface for direct, interference-free connection of SCSI testing and maintenance devices or SPC.

The front panel of the board contains a 7-segment display, two keys (CT and LD), an SCSI-interface and a V.24-interface.