3274 Cluster Network Address Labels; 3274 Customizing - IBM 3274 Planning, Setup, And Customizing Manual

Note: If you are replacing a 3271 or a 3272 with a 3274, you can use the existing device
cables between the
3271/3272
and the attached units. However, the
3271
or
3272
device
cables must be connected/disconnected by an IBM service representative, because the
3271 and
3272
and the attached units do not have customer access areas; It is
recommended that, before the IBM service representative. disconnects these cables, you
have the cables marked as described below.
To reduce delays associated with connecting these cables to the 3274, it is recommended
that each cable be marked at both ends to identify:
• The 3274 connector panel type (Category A panels or Category B panels) and the
3274 port (0 to 31) to which it is to be connected
• The unit type to be attached
For additional information concerning device cables, refer to IBM 3270 Information
Display System: Installation Manual - Physical Planning, GA27-2787.
A 3274 Device Cable Attachment form is provided in Appendix B of this guide to help
simplify marking and connecting the cables. Instructions for completing all portions of
the form except Network Addresses and using the form are also included in Appendix B.
A form should be completed for each 3274 cluster you order. Copies of the completed
form should be given to the personnel who will install and mark the cables and the
personnel who will connect the cables to the 3274. In addition, a copy of the form
should be stored in the pocket inside the 3274 customer access door for future reference.
3274 Cluster Network Address Labels
3274 Customizing
Hexadecimal address labels (IBM Part 1743290) are delivered with the 3274. (They will
be found, together with a Problem Report Form and Configuration Data card, in the
pocket inside the 3274 customer access door.) After each cluster unit is set up, the labels
that specify the unit's network address should be attached to the unit's address label
holder (if present).
It is recommended that a designated person in your organization (1) obtain the cluster
network addresses from the system programmer, (2) enter the addresses in the Network
Address column of the 3274 Device Cable Attachment form in Appendix B, and (3)
distribute the network addresses information to the person who will attach the address
labels.
For information concerning SNA network addresses, refer to Systems Network
Architecture General Information: Network Addresses, GA27-3102; for information
concerning BSC network addresses, refer to IBM 3270 Information Display System:
Component Description, GA27-2749.
Once installation of a 3274 Model lA, 1B, or 10 Control Unit by your IBM service
representative (or your own setup of a 3274 Model 1C or SIC) is completed and device
cables have been connected, you are ready to configure your system of displays and
printers.
The 3274 controls the operations of all the terminals attached to it. Information stored
on a diskette (mounted inside the 3274) enables the control unit to perform its terminal
control functions. This system diskette, shipped with the 3274, contains microcode to
direct control unit functions and performs diagnostic routines to test the 3274 prior to
system operation. Before this diskette can perform any useful function in your system,
however, you must customize the diskette by writing certain information on it
specifically for your configuration. Briefly, customizing is performed by keying in system
Chapter 1. Planning and Setup 1-7