6100 ADCCP Programming Manual

(65) SENDTEXT
Requests and Responses
069225 Tandem Computers Incorporated 6–23
(65) SENDTEXT The SENDTEXT request is used to transmit frames to remote stations and
acknowledge that the station has received them.
Request The SENDTEXT request queues a frame for transmission to a remote station. This
request makes it possible for your application to send the following types of frames:
Information frames (I-frames)
Unnumbered information frames (UI frames)
USER0, USER1, USER2, or USER3 frames
XID frames
TEST frames
The USER, XID, and TEST frame types have no special meaning in 6100 ADCCP. You
can decide their definition for your application. If the remote station is also controlled
by 6100 ADCCP, the frames you send are delivered to the remote station’s applications
and cause no protocol action beyond what you have defined.
Note You not need to specify the address field, the control field, or the sequence numbers for an outgoing
frame. The ADCCP protocol module supplies them.
The request buffer format is:
Function := 65
Modifier := 0
Request ID := A unique value from 1 through 32767,
determined by the application
Text Out := Number of bytes in the outgoing frame, plus
2 bytes. This count does not include the
address or control field to be added to the
outgoing frame. Also, the value in this
field may not exceed the value of the
MAXFRAME parameter.
Text In := 0
Text := Station ID :Byte
Use the ID of the station to which the
frame should be addressed. The
DEFINELIST request assigned the ID to
the station.
Status :Byte
Use a value of 1 in Bit 1 if the
poll/final bit of the frame must be
set, making this the last of a related
sequence of I-frames.