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ELECTRICAL CONNECTIONS
RS232 Interface
The RS232 interface is generally used for Point-to-Point connections. When it is con-
nected to the host computer it allows transmission of code data.
The following pins are used for RS232 interface connection:
It is always advisable to use shielded cables. The overall maximum cable length must be
less than 15 m (49.2 ft).
RS422 Full Duplex Interface
The RS422 full-duplex (5 wires + shield) interface is used for non-polled communication
protocols in point-to-point connections over longer distances (max 1200 m / 3940 ft)
than those acceptable for RS232 communications or in electrically noisy environments.
The CBX pinout follows:
74
MATRIX 220
CBX100/500
TX
RX
SGND
Figure 48 - RS232 Main Interface Connections
CBX100/500
TX+
RX+
TX-
RX-
SGND
Description
Transmit Data
Receive Data
Signal Ground
User Interface
SGND
RXD
TXD
SGND
TX
RX
Reader
Description
RS422 Transmit Data +
RS422 Receive Data +
RS422 Transmit Data -
RS422 Receive Data -
Signal Ground
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