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DTM-3200 – OEM Ethernet TSoIP Converter
User Manual
Please note that it is not required to select between I
automatically use the interface on which it detects activity.
DIP switches for RS-232/485/422
For RS-232 or RS-485/422, the DIP switches have the following meaning:
Switch #
1
Device address bit 0 – LSB (off = 0, on = 1)
2
Device address bit 1 – MSB (off = 0, on = 1)
3
RS-232 or RS-485/422 (off = RS-232; on = RS-485/422)
4
Baud-rate (off = 9600; on = 115200)
The device address bits are used for RS-485/422 only. The device address is 0x40 + two LSBs as
selected by the DIP switches. This means that the device address range is between 0x40 and 0x4
2
DIP switches for I
C
2
For I
C communication, the DIP switches have the following meaning:
Switch #
4, 3, 2, 1
Device address bit 3..0 (DIP switch off = 0, on = 1)
The I
2
C device address is 0x40 + four LSBs as selected by the DIP switches. This means that the I
device address range is between 0x40 and 0x4F.
3.4.5 Control connector
The pinning of the control connector is shown in the table below. It's a single row pin header for
connecting the RS-232 (DCE), RS-485/422 or I
depends on whether RS-232 or RS-485/422 mode is selected by the DIP switches.
The pinning of this connector has been chosen in such a way that a 9-way flatcable with a press-f
sub-D flatcable connector can be connected directly to pin 1 – 9, see the figure below.
2
C control bus. The exact function of the signals
Pin
RS-232 mode (DCE) RS-485/422 mode
1
NC
2
NC
3
TX
4
CTS
5
RX
6
RTS
7
NC
8
NC
9
GND
10
NC
11
SDA
12
SCL
16
2
C and RS-XXX: The DTM-3200 will
Description
Description
NC
NC
TX/RX-
NC
NC
TX/RX+
NC
NC
GND
NC
SDA
SCL
2
C
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