Configuring The M-Bus Modem On The Pc (Mod002) - Relay MOD002 User Manual

POWER
The following connections are situated at the back of the modem:
Power: AC or DC power socket: 12–35VDC or 9–24VAC
(A 9V AC plug-in power supply unit is part of the delivery scope.)
Serial: DSUB-9F connector for RS-232C serial interface
Line: RJ12C socket to connect the analog telephone line

3. Configuring the M-Bus Modem on the PC (MOD002)

Two M-Bus modems are required to configure a simple M-Bus data communications link:
one for the PC and one for the level converter (RS-232C → M-Bus) on the bus.
The RS-232C interface of the PC M-Bus modem is connected to the computer port with a 9-
pole 1:1 cable (accessories). When the power supply unit has been inserted the power LED
and some other LEDs should shine.
The configuration of the modem as an M-Bus modem is explained below. This configuration
can be stored in the modem EEPROM with the AT&W0&W1 command, so that if the
operating voltage is disconnected or if the modem receives an ATZ command it returns to
the M-Bus mode.
Configuration Steps for the M-Bus Modem (PC)
•
Start terminal program (for example TELIX, HYPERTERM, ZOC) and select a COM port,
any data format and baud rate (for example 9600,8,N,1).
•
Enter AT<CR> (modem should detect baud rate; if no entry echo appears on the screen,
enter next command line blindly).
•
Enter AT&F<CR> (initialize modem with factory profile).
•
ATU1<CR> (user command to set the M-Bus mode). Note: Both lines may also be
combined to AT&FU1<CR>.
•
AT&W0&W1<CR> (store configuration permanently in the modem EEPROM).
M-Bus - MODEM
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SERIAL
31.01.07, Version 2.0
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