User's Manual

Connecting the apC/8X to a Host
apC/8X Technical Manual 4-5
Plug connectors from the apC/8X and the host into the converter. The pin
connections for the apC/8X, converter, and host are listed in Table 4.2 and
Table 4.3.
Note: Each side (host side and apC/8X side) of the converter can be
configured as DTE or DCE. If configured as DTE, pin
connections must be a crossover. If configured as DCE, pin
connections must be straight through.
Table 4.2 and Table 4.3 assume that each side of the converter is configured
as DTE, so crossover connections are shown. If you configure either side of
the converter as DCE, use straight through pin connections on that side. For
example, Pin 1 of P32 on the apC/8X should be connected to Pin 4 of the
converter.
Note: The RS232 to RS485 converter has not been evaluated by UL for
use with the apC/8X.
Table 4.2: apC/8X Pin to Converter Pin Connections
apC/8X P32 RS-485 Converter
Signal Pin # Signal Pin#
TX- 1 RX- 6
TX+ 2 RX+ 24
RX+ 3 TX+ 22
RX- 4 TX- 4
GND 5
Table 4.3: Converter to Host Connections
Converter RS-232 Host RS-232
Signal
DB-25 Pin
#
Signal
DB-25 Pin
#
DB-9 Pin
#
RX 2 TX 2 3
TX 3 RX 3 2
GND 7 GND 7 5