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Operation
The RS-232/USB interface board includes
one of the following interfaces:
− RS-232 interface (RJ-12 jack)
− USB interface (5-pin mini-B port) (slave)
The RS-485 data transfer uses an SSP or
Modbus RTU protocol. The protocol of the
RS-232 interface is set at the controller in the
D.2.1 configuration item.
A USB cable (see the 'Operation' section) is
used for data transmission between the USB
interface and the USB port of the computer.
A connecting cable RJ-12/D-sub 9 pin (see
the 'Operation' section) is used for data
USB
RS-232
GND
RS-232
DTR
TX
DCD
RX
+5V
Fig. 8-1: RS-232/USB interface board
8-20
transmission between the RS-232 interface
and the COM port of the computer.
A connecting cable RJ-12/D-sub 9 pin and
the USB to RS-232 adapter (see the 'Opera-
tion' section) are required for data transmis-
sion between the RS-232 interface and the
USB port of the computer.
A driver must be installed to use the USB
interface and the USB to RS-232 adapter
(see the 'Start-up and configuration' section).
EB 6495-2 EN
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