IBM SY44-5902-05 manual Determining a primary or alternative console Introduction

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Determining a primary or alternative console

Introduction

A console is a workstation that allows you to view and control system operations. The primary console is the first workstation that the system identifies. It is attached to the first input/output adapter (IOA) or input-output processor (IOP) that supports workstations. The alternative console is the workstation that functions as the console when the primary console is not operational. The system can assign up to two alternative consoles. The first alternative console can only be a twinaxial workstation that is attached to the same IOP as the primary console. The next alternative console is a workstation that is attached to the next IOA or IOP that is capable of supporting workstations.

The IOA or IOP that supports a console must be on the system bus (bus 1).

If a workstation is not correctly attached to the first IOA or IOP that is capable of attaching workstations, the system will not assign a primary console. If it does not assign a primary console, the system displays a reference code on the control panel. If the system is set for Manual mode, it stops during the IPL.

For more information on how to determine the primary and alternative consoles, see “Identifying the consoles when the system is operational”.

Primary console requirements

For a workstation to be the primary console, it must be operational and attached to the system bus. It must also have the correct port and address assigned. If the workstation is a personal computer, it must also have an active workstation emulation program.

The workstation requirements are:

vTwinaxial workstation

–Port 0, Address 0, Bus 1

vASCII workstation

–Port 0, Bus 1

vPersonal computer attached to ASCII IOP

–Port 0, Bus 1

–Personal computer software to emulate a 316x or 3151 terminal

vPersonal computer attached to Twinaxial IOP

–Port 0, Address 0, Bus 1

–5250 emulator software active on personal computer

For more information on how to determine the primary and alternative consoles, see “Identifying the consoles when the system is operational”.

Identifying the consoles when the system is operational

When the system is operational, you can determine the primary and alternative consoles by performing one of the following:

vLook at the display.

128Service Functions V5R2