gtps2m0u | ACF/SNA Data Communications Reference |
- Non-SNA applications (RCB/AAA dependent) can use synchronous data link
(SDLC) devices without being changed.
An LEID is defined for each 3270 SDLC device in the offline ACF/SNA table
generation process.
- Devices attached to 3x74/3276 cluster controllers have different
terminal-type values than those attached to 3271 control units.
See TPF General Macros for information on the TRMEQ
macro.
Terminal-type values are generated with this macro.
However, issuing a WRITE with the START PRINT bit set to 1 simulates the COPY
function.
TPF and the devices that interact with it use the following SNA
protocols:
- For terminals attached to 3271 control units:
- Brackets are not used.
- Change direction indication is not required.
- Function management headers are not required.
- For terminals attached to 3x74/3276 control units:
- Brackets are used.
- Change direction indication is required.
- Function management headers are not required.
- Note:
- It is recommended that you use the 3x74/3276 protocol for applications that
interact with both 3271 and 3x74/3276 units. TPF ignores end bracket
and change direction settings in output messages sent to 3271 attached
devices.