MT — MDT Mode

Configures the serial port for MDT (Mobile Data Terminal) operation. When active, the serial port receives text messages and routes them to the configured destination.

Format

• Query config: >QMT<
• Set config: >SMT{A}[{BBB}[{CCC}{D}[{\EE}[{\FF}[{\GG}[\{HH}]]]]]][;ROUTE={I}][;POS_FLAG={J}][;BAUD_RATE={KKKKKK}][;EXT_INFO={L}]<
• Response: >RMT{A}{BBB}{CCC}{D}\{EE}\{FF}\{GG}\{HH};ROUTE={I};POS_FLAG={J};BAUD_RATE={KKKKKK};EXT_INFO={L}<
• Query escape char: >QMTE<
• Set escape char: >SMTE{A}<
• Response escape char: >RMTE{A}<

Fields

Field	Values	Description
A	N,P,H	MDT mode: N=Normal, P=PAD, H=Hexadecimal
BBB	3 digits	Packet timeout
CCC	3 digits or FFF	Max packet size (FFF = 1024 bytes)
D	T,F	Include delimiter in packet: T=yes, F=no
\EE	2 hex digits	Delimiter 1
\FF	2 hex digits	Delimiter 2
\GG	2 hex digits or **	End pad character (** to disable)
\HH	2 hex digits	Reserved
ROUTE=I	0–F (hex), U	Destination route index; U=unset
POS_FLAG=J	T,F,NN	Position info: T=always, F=never, NN=event code
BAUD_RATE=KKKKKK	6 digits	Serial port baud rate (e.g., 009600)
EXT_INFO=L	A,B,C,F	Extended info type included in message

Examples

Set MDT to Normal mode, route to destination 0, 9600 baud:

>SMTN;ROUTE=0;BAUD_RATE=009600<

Set MDT to PAD mode with packet config:

>SMTP030FFFT\0D\0A\FF\FF;ROUTE=0;POS_FLAG=T;BAUD_RATE=009600;EXT_INFO=F<

Query current config:

>QMT<
>RMTN030FFFT\0D\0A\FF\FF;ROUTE=0;POS_FLAG=T;BAUD_RATE=009600;EXT_INFO=F<

Query escape character:

>QMTE<
>RMTE0<     ← escape character disabled

Enable escape character:

>SMTE1<

Related Signals

• Use XABR to configure the RS-232 baud rate independently
• MDT messages received are forwarded to the destination set in ROUTE