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Intellix
™
BMT 330 User Manual
BMT330UM
v1.0
20-Jun-16
NB: to send commands directly to the modem:
Use “atd#”to dial a number, where # is the telephone number.
Some modems require a specific command to open the data connection:
“atdt#”.
Use “ath” to terminate the communication. The modem’s escape sequence
(by default “+++”) prior “ath” is usually required whilst connected in data
mode.
The list of supported flow control modes is read by “at&k=?”. The current
mode is read by “at&k?” and set by “at&kN” or “at&k=N”, where N is
0 : no flow control
1 :hardware mono-directional flow control (only CTS active)
2: software mono directional flow control (XON/XOFF)
3: hardware bi-direction flow control
4: software bi-directional with filtering
5: pass through (software bi-directional without filtering)
6: both hardware bi-directional and software bi-directional flow control with
filtering
NOTE: The AT commands above and flow control modes are widely accepted as
standard but may differ for a particular modem. Please refer to the modem
documentation.
Notes on Intellix™ BMT 330 communication ports
Two ports (PORTØ and PORT1) are available in Intellix™ BMT 330; see Figure 8.
Both ports can be used simultaneously and independently of each other. However
some limitations apply when attempting to use more than one master/client per
port.
MODBUS on RS485 allows only a single-master at any time. Thus, if more than
one master is required to communicate with Intellix™ BMT 330, they must do so
sequentially. In particular, the BMT Setup Software keeps the communication port
open, once it has been successfully established, to maintain the given access
provided by the POTM. The BMT Setup Software must be closed to release the
communication port.
