Moog Tritech Seanet SCU v5, Руководство по эксплуатации продукта, Страница: 20 / 33

Data and Control Ports Seanet SCU v5
0581-SOM-00002, Issue: 05 20 © Tritech International Ltd.
The COMMS row of LEDs are bi-colour, with Red - Receive; Green - Transmit
The remaining LEDs are Blue, indicating the communications protocol which has been
software selected for a particular port.
If working in reduced lighting conditions, the overall brightness of the status indicators may
be controlled through the “Seanet Setup” configuration interface for the SCU.
Port A Details
All signals are fully isolated and voltage transient protected with respect to the
communications power supply. The modes are software selectable. When used in RS-232
mode, the pin out of this port is wired in the same way as a PC serial “COM” port (i.e. using
DTE signal directions), and compatible with any standard RS-232 peripherals and cabling.
Supports data transfer rates of up to 115200 baud.
PORT A
4 5 1 2
8 6
3
7 9
SCU DE-9 male connector
Pin RS232 RS485
1 ‡ ‡
2 RX TX/RX.A
3 TX TX/RX.B
4 ‡ ‡
5 GROUND GROUND
6 ‡ ‡
7 RTS ‡
8 CTS ‡
9 ‡ ‡
‡ = connected for handshaking only.
Note
Port A will also work as a 3-wire RS232 connection without RTS and CTS. Pin
7 and 8 maintain signal levels of +/-12V for both 3-wire RS232 and RS485
Port B Details
All signals are fully isolated and voltage transient protected with respect to the
communications power supply.