AM3270 and TR3271 Configuration and Management Manual

Overview of AM3270 and TR3271
AM3270 and TR3271 Configuration and Management Manual—529993-001
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AM3270:Typical Configuration
AM3270:Typical Configuration
Figure 2-1, Typical AM3270 Configuration shows a typical 3270 configuration for an
AM3270 line connected to the SWAN concentrator.
A program ($SYSTEM.CSSnn.C0039P00) downloads the AM3270 protocol to the
Communications Line Interface Protocol (CLIP) in the SWAN concentrator.
AM3270:Pass-Through Configuration
In Pass-Through Protocol (PTP) mode, AM3270 works with the TR3271
communications subsystem to connect an AM3270 subdevice directly to a TR3271
subdevice without an intervening application process. Use this capability to attach
subdevices controlled by AM3270 directly to another IBM, NonStop S-series server, or
Integrity NonStop NS-series server over the Expand network.
Figure 2-2, Example of AM3270 Pass-Through Configuration shows a typical pass-
through configuration. AM3270 devices t1 and t2 are connected to corresponding
emulated subdevices x1 and x2 on the TR3271 side, and data passed through to the
IBM-compatible host.
Joining Subdevices for Pass-Through Mode
To add subdevices to each line, use SCF to join the subdevices together to perform the
pass-through function.
Figure 2-1. Typical AM3270 Configuration
Figure 2-2. Example of AM3270 Pass-Through Configuration
VST001.vsd
PROGRAM
AM3270
I/O Processes
SWAN
CLIP
Comm Line
3271
Cluster
Controller
t1 t2 t3
t4
327xCRT Terminals
328xPrinters
VST002.vsd
3270 Devices and Controller
t1
(Printer)
t2
(CRT)
Comm
Line
HP NonStop System
AM3270 TR3271
x1 x1
(PTP) (PTP)
x2 x2
(PTP) (PTP)
Comm
Line
IBM
Compatible
Host