Tait T2000-A75, Operation Manual, Page: 21 / 38

November 2001 M2256-000-00-051 21
Receiving SDMs
When the A75 receives an SDM, it sends a PROGRESS message of [PTYPE] SMD Data Re-
ceived (1E) with the flag set to ‘1’ or ‘0’ depending on whether the SDM contained a [MES-
SAGE] parameter. Refer to the
PROGRESS command details for further information.
Other SDM Commands
A QUERY command (
➀
) can be sent to the A75 to request the text from the A75 SDM EE-
PROM.
When it receives the SDM QUERY command, the A75 responds with a GET_SDM message
(
➁
). If there is no data in the EEPROM then the GET_SDM is returned with an empty [PA-
RAMETERS] field.
The SDM CANCEL command sent to the A75 clears all SDM text from the A75 SDM EE-
PROM.
PC(1) A70(1) A70(2)
SDM
ACK
RS232 over air
PC(2)
RS232
p 1E1
[SIZE] [CHECKSUM] PROGRESS
SEND_SDM
PROGRESS
ACK
Delay
Time
PC(1) A70(1)
A70(2)
RS232 over air
PC(2)
RS232
q 1
[SIZE] [CHECKSUM]
s Hi
[SIZE] [CHECKSUM]
QUERY
GET_SDM
1
2
PC(1) A70(1)
A70(2)
RS232 over air
PC(2)
RS232
c 1
[SIZE] [CHECKSUM]
CANCEL