Handbuch / Manual
9 ARCNET Interfaces
Cards with a coaxial and RS-485 interface network on board (-KR) can
always only operate with one of this interfaces at the same time!
9.1 Coaxial Interface (-K, -KR, also with hub)
Connector type: BNC Socket, decoupled from device housing
9.2 RS-485/EIA-485 Interface (-R, also with hub)
Important: To maintain the electro-magnetic compatibility (EMC) the
shield of the cable connected to the D-sub DE9M plug must be solidly
attached to the screen of the connector.
Connector type: D-sub DE9F socket
Pin assigment
Pin
Marking
Description
1,5
GND_RS
Reference potential,
supply
3
DATA-A
Data line A
4
DATA-B
Data line B
2, 6-8
NC
reserved
9
+5V_RS
Is5 V Supply for
RS485 Interface. The
maximum current must
not exceed 25 mA.
Shield
AGND
Shield
Insulation is implemented between RS485 pins 1 to 9 on one side and the
shields of RS485 and the PC on the other side.
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