P2 - Serial; Procedure To Connect The Serial And I/O Ports To An External Cable - Varian TV 801 Mode D'emploi

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.
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TECHNICAL INFORMATION
SIGNAL NAME
NOTE
87-900-980-01(B)