© Adolf Thies GmbH & Co. KG · Hauptstraße 76 · 37083 Göttingen · Germany
021408/04/21
Phone +49 551 79001-0 · Fax +49 551 79001-65 · [email protected] ·
Page 17 of 18
6.2.2 Connection Serial Interface RS422 / RS485
The following interfaces are available:
-
COM 2,3,4,5 as RS422 interface.
-
COM 1 selectable between RS422 (full-duplex) und RS485 (half-duplex).
The baud rate setting of the interfaces takes place via DIP switches 7 and 8 on the rear
panel (refer to settings chapter 7.5). The setting applies to all interfaces.
Default setting
4800 baud
The following interface specification is permanently set for the outputs (8N1):
8 data bit
NO parity
1 stop bit
A special interface specification is not necessary for the inputs, which may have the following
interface specification:
•
COM1:
8N1, 7E1
•
COM2 + COM3: 8N1
6.2.2.1 COM 1 and COM 1’
•
For wind transmitters with serial data transfer (Ultrasonic- Anemometer 4.38xx...., Wind
Direction Transmitter First Class 4.3150.x0.400) and other external Winddisplay LED’s
(Slaves).
The connection is established via clamp connectors „COM1“ / „COM1’ “. The two clamp
connectors of the interface are connected in parallel.
Des.
Clamp connector:
COM1
Clamp connector:
COM1’
TX- (RX-)
transmitter (receiver)
transmitter (receiver)
TX+(RX+)
GND
ground
ground
RX-
receiver
receiver
Winddisplay LED
HDT message
Ultrasonic Anemometer
VBW, VHW or VTG message
Ext. Winddisplay
NACOS telgram
CUSTOMER telegram
COM 1, COM 1’
COM 3
COM 2
COM 1, COM 1’
COM 4
COM 5
