MLB-G1101 DTU User Guide
18
Rev 1.1
5
SCHMIDT Protocol
Protocol Description
The SCHMIDT Protocol defines the method of data exchange between host controller and a target
SCHMIDT 3G DTU. It specifies how a host controller can address, configure, and command a target
SCHMIDT 3G DTU in order to communicate with M2M devices.
The SCHMIDT Protocol supports Binary format exchange. The host controller initiates every REQUEST
/ RESPONSE sequence.
Figure 7: Binary Protocol Exchange
Host Interface RS-232
RS-232 Host Interface is used to communicate with PC or other terminal devices.
A 3-wire interface (RX, TX and Ground) is implemented.
RS-232 Data Rates (Baud Rates)
115200 bits/sec, N, 8, 1
PS : No Parity Bit, 8 Data Bits, 1 Stop Bit.
HOST
REQUEST
DTU
EXECUTE COMMAND
RESPONSE
