C
ONVERTER
RS-232, RS-422, RS-485
O
PERATION
M
ANUAL
IOA55-1c
August
2009
11
configuration
DIP-SWITCH
Figure 6. Lower panel view of the TR-55 converter – all versions
2.1. Connectors
2.1.1. TR-55.1
The device is equipped with the
RJ-45
screened connector intended for a two-pair
twisted wire. Optic-fibre wire should be connected by the agency of SC-type connectors
(double, single for final converter version and two double or single ones for intermediate
converter version).
1
8
Figure 7. Pin numbering of the RJ-45 connector
The
RJ-45
socket of the
TR-55
converter is adjusted for connecting to the serial
computer port of the RS-232 standard or any other device equipped with a port of the RS-232,
RS-422, RS-485 standards. The interface is used for local communication. The view of this
connector is shown in figure 7. Table 1 shows description of specific outputs.
Table 1. Specific pins description of the RJ-45 connector
Function
Pin number of RJ-45
connector
RS-232
RS-422
RS-485
1
TxD +
D +
2
TxD
TxD -
D -
3 RxD
RxD
+
4 Signal
Ground
5 Signal
Ground
6
RxD
-
7 SHIELD
8 SHIELD
