SOHARD SH ARC-USB, Manual

Page: 21 / 32

Handbuch / Manual
21
9 ARCNET Interfaces
9.1 Coaxial Interface (-K)
Connector type: BNC Socket, decoupled from device housing
9.2 RS-485/EIA-485 Interface (-R)
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 USB on the other side.