Telemetry Module MT-102 User's Manual - BlueNote Communications

Transmission parameters are:
speed of 9600bps,
8 data bits,
no parity,
1 stop bit,
hardware handshake (RTS/CTS).
This port is ideal for connecting external graphical or text panel supporting Modbus RTU
Master.
NOTICE!
The first configuration has to be performed locally, via PORT1 in order to
provide the module with basic GPRS communication parameters like PIN code
and APN name.
PORT2 is capable of operating in RS-232/422/485 modes and serves communication with
external data sources. The interface and operating mode is selected during module's
configuration. This port is optoisolated.
4.2.4. Real time clock
MT-102 Module is equipped with astronomical time clock (RTC).
The clock is a base for defining working cycles of module, timers and time stamps for
measurement results recorded in registers. Imprecise clock setting results in faulty time
stamping and subsequent loss of vital information. For that reason, it is recommended to
set the clock to UTC time instead of the local time zone of the module's placement.
CAUTION!
The module's RTC clock does not automatically adjust to summer/winter
time. To avoid loss of data during manual time adjustment, UTC time is
recommended.
CAUTION!
The RTC clock is powered from an internal battery, and as long as it is
operational there is no need to reset the time after power-off. Since the
clock precision is not absolute, periodical time adjustment may be
necessary.
Setting the time is described in configuring mode documentation for the MTM program.
4.3. Internal resources
4.3.1. Registers
MT-102 Telemetry module has in its internal resources 16 bit input registers and 16 bit
internal registers. Remote access to these areas is possible using standard Modbus
commands.
Internal Registers are not reset at power off.
Input Registers are reset at power on.
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