Instructions

Hardware installation
104275_en_c00 PHOENIX CONTACT 2-11
RS-485 W2/RS-422 interface
In addition to the D-SUB plug, a 6-pos. COMBICON plug is used. The pin assignment is as
follows:
The interface is electrically isolated from all other isolated groups.
In the case of the RS-485 version, the T-BUS DIN rail connector can be used for data trans-
mission. Star structures can also be created (see "Star structure via DIN rail connector and
RS-485 interface" on page 1-12).
T-BUS DIN rail connector
The interface has ground reference and is not electrically isolated from the potential of the
supply voltage.
Table 2-2 Assignment of the RS-485/RS-422 interface (COMBICON)
Contact RS-485 W2 RS-422 Assignment
1- R(N)
2- R(P)
3 D(A) T(N)
4 D(B) T(P)
5 GND GND
6 Shield Shield
RS-232 and RS-422 do not support data transmission via the DIN rail connector. Howev-
er, power supply is possible.
Table 2-3 Assignment of the DIN rail connector (T-BUS)
Contact Signal Comment Assignment
1 24 V Supply voltage, 24 V
2 0 V Supply voltage, 0 V
3 GND Common ground
4 D(A) Local bus (RS-485 only)
5 D(B) Local bus (RS-485 only)
In principle, a star structure via the DIN rail connector can only be used in combination
with RS-485 mode.
VCC
DG
RD
TD
LINK
STAT
LINK
DSL A
B
A
L
TERM
RS232
1
2
3
4
5
6
1
2
3
4
5