P2 - Serial; Procedure To Connect The Serial And I/O Ports To An External Cable - Varian 869-8933 Manual De Instrucciones

How to connect the outputs of the controller
The following figure shows a typical logic output
connection (relay coil) but any other device may
be connected e.g. a LED, a computer, etc., and
the related simplified circuit of the controller.
The following figure refers to the programmable
set point signal on pins 11 and 9.
Typical output connection
The following figure shows a typical output con-
nection to a relay coil.
Output to a relay coil

P2 - Serial

This is a 9 pin D-type serial input/output connector
to control via an RS 232 or RS 485 connection the
TV 801 Navigator Bolted Flange.
PIN N.
1 +5V OUT
2 TX (RS232)
3 RX (RS232)
4 A + (RS422 optional)
5 GND
6 A + (RS485)
7 B – (RS422 optional)
8 B – (RS485)
9 RESERVED
Note that the vent valve can also be controlled by
means of the serial connection.
A serial communication kit with a serial cable and
the Navigation software is available (optional).
PROCEDURE TO CONNECT THE SERIAL AND
I/O PORTS TO AN EXTERNAL CABLE
In the following picture, it has showed the right
procedure to connect a cable to the I/O or to the
serial port.
A shielded cable has to be utilized. Remove the
plastic protection on both the ends of the cable (pic-
ture b) and after it is necessary to connect the wires
to the single pins like showed in the picture c.
Take care to have a good contact between the
metallic case and the external shield of the wire.
Moreover, this operation has to be done at least
on the controller side.
59
TECHNICAL INFORMATION
SIGNAL NAME
NOTE
87-900-980-01(B)