ELECTRICAL CONNECTIONS
74
MATRIX 220
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:
CBX100/500 Description
TX Transmit Data
RX Receive Data
SGND Signal Ground
It is always advisable to use shielded cables. The overall maximum cable length must be
less than 15 m (49.2 ft).
User Interface
Reader
RXTXSGND
TXDRXDSGND
Figure 48 - RS232 Main Interface Connections
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:
CBX100/500 Description
TX+ RS422 Transmit Data +
RX+ RS422 Receive Data +
TX- RS422 Transmit Data -
RX- RS422 Receive Data -
SGND Signal Ground
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