Optional Serial Port; Serial Port Installation; Serial Communication Port; Rs 232-422 Communication Description - Varian Turbo-V 550 PCB Bedienungshandbuch

OPTIONAL SERIAL PORT

Serial Port Installation

An optional RS 232/422/485 kit is available for both
models. To install it, proceed as follows:
•
Switch off the power
•
Attach the interface board connector to connector
P6 on thecontroller and then secure it in place using
screew A (3x6), which is not provvided..
•
Insert the flat cable and plug it into the socket P1
located on the Interface board.
Serial port connector installation

Serial Communication Port

Communication serial port connections and mini- mum
connection configuration are shown in the following
figures. The communication port mating connector is
supplied with the RS 232 PCB (AMP/Cannon or
equivalent 9-pin "D" type male connector). The external
cable (not supplied) between the host computer and
the controller doesn't require any crossed wires so that
signals are connected correctly. For example, the
Transmit data signal from controller (pin 2) must be
connected to the host computer's Receive data line (pin
2) and vice versa. Consult the host computer's
instruction manual for its serial port connections.
Varian cannot guarantee
regulations for radiated emissions unless all external
wiring is shielded, with the shield being terminated to
the metal shroud on the O-subconnector. The cable
should be secured to the connector with screws.
NOTE
compliance with

RS 232-422 Communication Description

Communication format:
•
8 data bit
•
no parity
•
1 stop bit
•
The baud rate is programmable via front panel from
600 to 9600 baud. The controller is factory-set for
9600 baud operation.
When a baud rate of 2400, 4800, 9600 baud is used,
the requested information from to controller must be
sent with a minimum interval of 1 second to avoid the
controller hang-up.
Communication protocol:
Host = Master Turbo-V550
controller = slave
The communication is performed in the following way:
Communication RS 232 serial port connections
FCC
Communication RS 422 serial port connections
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TECHNICAL INFORMATION
NOTE
87-900-885-01 (B)