IBM 3000 manual Escon Channel Conguration Information

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