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Installing and putting a SINAUT modem into operation
6.4 MD2 dedicated line modem
Figure 6-12
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.
Figure 6-13
248
View of the MD2 modem from below
Possible settings on the 4-pin DIL switch to activate RS-232/RS-485
SINAUT ST7 Station control system - System Manual
System Manual, 05/2007, C79000-G8976-C178-06
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