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Installation and commissioning of the modems and routers
5.5 MD2 dedicated line modem
Setting on DIL switch
*) For detailed explanations of the test modes, refer to Chapter 4 of the MD2 Modem Description 6NH7811-0AA21 that can be ordered
separately.
Setting on DIL switch
164
Meaning
Test mode: Test send RS-485 *)
In this test mode, a short message (2 bytes) in the asynchronous 11-
bit format is output permanently at the transmitter output of the mo-
dem and on the RS-485 interface.
Test mode: Test send *)
In this test mode, a short message (2 bytes) in the asynchronous 11-
bit format is output permanently at the transmitter output of the mo-
dem.
Test mode: Test receive *)
This test mode, along with the "Test send RS-485" and "Test send"
test modes, checks the function of the transmission line and the
receiver unit of the modem.
Test mode: Test f baud *)
In this test mode, the lower and upper keying frequency is output
alternately at the clock rate of the transmission speed at the transmit-
ter output of the modem.
This corresponds to the binary character sequence 01010101...
Test mode: Test f L *)
In this test mode, the lower keying frequency is output permanently
at the transmitter output of the modem.
Test mode: Test f H *)
In this test mode, the upper keying frequency is output permanently
at the transmitter output of the modem.
Meaning
Character format: Message consisting of a series of asynchronous
characters, each 11-bit (1 start bit, 8 data bits, 1 parity bit, 1 stop bit).
This is the standard setting for sending SINAUT messages. In this
case, message format FT 1.2, based on 11-bit asynchronous charac-
ters is normally used for transmitting over dedicated lines.
Character format: Message consisting of a series of asynchronous
characters, each 10-bit (1 start bit, 8 data bits, 1 stop bit).
This setting is required for transmitting SINAUT ST7 messages over
dedicated lines with the optional FT 2 message format. This format is
based on 10-bit asynchronous characters.
System Manual, 09/2016, C79000-G8976-C178-10
SINAUT ST7 station control system
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