ESCON Channel Con®guration Information

Table 18 lists all con®guration items, what each item is used for, and the allowable value options for each item. The factory-set default values are underlined.

Table 18. ESCON Channel Attachment Items

Con®guration Item

Description

Value Options

 

 

 

ESCON Link A

Speci®es if ESCON Channel Link A is installed.

Yes or No

Installed

 

 

ESCON Link B

Speci®es if ESCON Channel Link B is installed.

Yes or No

Installed

 

 

Device Address

Speci®es the 2-digit hexadecimal channel address which

00 to FF (Hexadecimal notation).

 

includes the device address.

Default is X©00©

 

Notes:

 

 

1. In simplex mode, only one device address is required.

 

 

2. In dual simplex mode, each printer requires a unique

 

 

device address. Printer 1 requires an even number

 

 

(for example, X©30©); Printer 2 requires the next

 

 

consecutive number (for example, X©31©).

 

 

3. The duplex system does not require a unique number.

 

 

It can use either of the addresses used for dual

 

 

simplex Printer 1 or dual simplex Printer 2. However,

 

 

it is often easier from an operational viewpoint to

 

 

assign duplex a separate address (so the duplex and

 

 

simplex printers look like unique devices to the

 

 

operating system). The general convention in this case

 

 

is to assign the duplex system the next consecutive

 

 

address (even) after the address for simplex Printer 2.

 

 

For example, if you de®ne Printer 1 in dual simplex

 

 

as X©30©, you should then de®ne Printer 2 in dual

 

 

simplex as X©31©, and, optionally, de®ne the complete

 

 

system in duplex as X©32©.

 

 

4. The device addresses speci®ed above must match the

 

 

device addresses de®ned to the host PSF software,

 

 

and in the case of S/390 hosts, the I/O device

 

 

de®nitions.

 

 

 

 

Multi-host

Shows whether a multiple host printer-sharing system

True or False

environment ¯ag

exists. If this environment ¯ag is set, all hosts are

 

 

required to use the assign/unassign protocols of the

 

 

attachment architecture. (Not supported on all printers.)

 

 

 

 

Card 1 Slot Position

The printer sets this entry automatically at power on time

v 2 or 4 or Not Installed (for

 

if the system senses the presence of an ESCON Channel

Model ES1)

 

card. This item is not selectable.

 

v 6 or 8 or Not Installed (for

 

 

 

 

Models ED1/ED2)

 

 

 

Card 2 Slot Position

The printer sets this entry automatically at power on time

v 2 or 4 or Not Installed (for

 

if the system senses the presence of an ESCON Channel

Model ES1)

 

card. This item is not selectable.

 

v 6 or 8 or Not Installed (for

 

 

 

 

Models ED1/ED2)

234InfoPrint 3000 Operator's Guide

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IBM 3000 manual Escon Channel Conguration Information