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TM8100/TM8200 Computer-Controlled Data Interface (CCDI) Protocol Manual CCDI 31

Examples

q010FE a command requesting a MODEL message.

q002F also a command requesting a MODEL message.

q011FD a command requesting a GET_SDM message.

q013FB query the software version.

1.9.6 SEND_ADAPTABLE_SDM

The SEND_ADAPTABLE_SDM command requests the radio to send a

fixed format ASCII Short Data Message (SDM). An SDM can be received

when the radio is in Command and Transparent modes.

Format a [SIZE] [LEAD_IN_DELAY] [GFI] [SFI] [DATA_MESSAGE_ID]

[MESSAGE] [CHECKSUM]

After an SDM is sent, if the ‘SDM Auto Acknowledge’ field is set in the

programming application, the radio waits for an acknowledgement before it

generates a PROGRESS message. The PROGRESS message is either type

1D0 ‘SDM auto-acknowledge not received’ or 1D1 ‘SDM auto-

acknowledge received’. Refer to “PROGRESS” on page 44.

Note that the delay before the acknowledgement is sent and how long the

radio waits is also set in the programming application.

In Command mode, when any SDM is received, whether valid or not, the

radio sends an ‘FFSK Data Received’ PROGRESS message to the PC. If

the SDM is valid with a [MESSAGE] component, the radio also sends an

‘SDM Call’ RING message to the PC. RING will be type ‘Data Call’.

When in Command mode, when a valid SDM is received the radio beeps.

Note The radio can not receive any further SDMs if one is already

stored in the buffer. The buffer must be cleared using a CANCEL

command.

■ ‘a’ is sent as a single ASCII character and represents the

SEND_ADAPTABLE_SDM command.

■ [LEAD_IN_DELAY] is two ASCII hex characters representing the delay

after the radio transmitter keys-up and the start of data transmission. The

range is 00 to FFh.

The actual delay is calculated by multiplying the number by 20 ms. This

corresponds to a Lead-In Delay between 00 ms and 5.1 seconds, in steps

of 20 ms. A minimum of at least 20 ms of Lead-In Delay is required for

the radio.

■ [GFI] is a single ASCII character giving the General Format Information

(GFI) of the SDM.

Tait TM8100 Protocol Manual

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