Installation
DIGIgarde PLUS User Guide
Last Change
Copyright
©
2012 TDSi
13 May, 2016
Page 19
2.4.2
2.4.2
2.4.2
2.4.2
RS232
RS232
RS232
RS232
NOTE.
RS232 is no longer supported on current readers.
Connect
RS-232 RX
,
RS-232 TX
and
RS-232 0V
on the reader to
TX
,
RX
and 0V
of the PC serial port respectively. Please refer to Figure 10.
Figure 10
Connecting a single DIGIgarde PLUS to a PC using RS-232
2.4.3
2.4.3
2.4.3
2.4.3
RS485
RS485
RS485
RS485
NOTE.
RS485 is no longer supported on current readers.
Half duplex (2
Half duplex (2
Half duplex (2
Half duplex (2----wire)
wire)
wire)
wire)
For a half-duplex (2-wire) network operation a single pair of twisted wires in a
shielded cable is required. For every device in the half-duplex network, connect
TX+
to
RX+
and
TX-
to
RX-
locally before connecting to the network. At the end of
the network, termination resistors of 120
Ω
should be connected between the
+ve
and
-ve
terminals.
NOTE.
Each unit must have a different Device number (set in
Menu > Options >
Comm Opt > Dev Num
, see page 37).
Figure 11
Example of a half-duplex (2-wire) RS-485 network
Summary of Contents for DIGIgarde PLUS
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