Idemia VisionPass - RS-422 Communication Setup and Wiring; RS-422 Point-to-Point Configuration

IDEMIA DOCUMENT – REPRODUCTION AND DISCLOSURE PROHIBITED
RS-422 Communication
16
Step three : communications
RS-232
from the
Com Port
RS-232 to
RS-422
converter
RS-422 to
1200m (4000ft)
The maximum total cable length is 4000 ft. (1200m).
The cable must be dedicated to this installation and not used for any other purpose
For RS-422 installations, the cable should be run in a point to
point configuration (i.e. PC > converter > terminal)
Use CAT-5 UTP (or better) cable (shielded recommended)
with a impedance of 120 . AWG 24 should be the minimum
wire gauge used.
Choose one twisted pair of conductors to use for RS485_TX_Y (TX+, Green / Black wire - 10) and RS485_TX_Z (TX-, Green
/ White wire - 8).
Choose one twisted pair of conductors to use for RS485_RX_A (RX+, Blue / Black wire - 7) and RS485_RX_B (RX-, Blue /
White wire - 9).
Another conductor should be used for Signal Ground (Black / Red wire - 11).
IDEMIA - 2019_2000045730 – V1
7
RS485_RX_A (RX+)
Blue / Black
8
RS485_TX_Z (TX
-)
Green / White
9
RS
485_RX_B (RX-)
Blue / White
10
RS
485_TX_Y (TX+)
Green / Black
11
RS
485_GND
Black / Red