Installing and putting a SINAUT modem into operation
5.5 MD2 dedicated line modem
Station control system
System Manual, 07/2009, C79000-G8976-C178-07
205
5.5.3
DIL switches and connectors accessible from below
The following figure shows the MD2 modem from below with the X3 RJ-12 Western jack, the
DIL switch for activating the RS-232 or RS-485 port and the DIL switch for activating the
WAN terminating resistors.
1 2
3
4
1
2 3 4
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21
2))
21
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Figure 5-12 View of the MD2 modem from below
DIL switch for activating the RS-232 or RS-485 port
On the bottom of the modem housing, a 4-pin DIL switch is accessible with which you can
specify whether the RS-232 or the RS-485 port is active. For RS-485 operation, you can also
activate the terminating resistor. It is, however, recommended that you activate this
terminating resistor on the RS-485 connector on the last MD2.
The following figure shows the possible settings in general.
