J6 - Serial; Input Power Connection; Rs 232/Rs 485 Communication Description; Communication Format - Agilent Technologies TV 301-P Bedienungshandbuch

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

J6 - Serial

This is a 9 pin D-type serial input/output connector
to control via an RS 232 or RS 485 connection the
TV 301-P.
PIN N.
1 +5 V (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).
SIGNAL NAME

INPUT POWER CONNECTION

The following figure shows the input power connection.
RS 232/RS 485 COMMUNICATION
DESCRIPTION
Both the RS 232 and the RS 485 interfaces are avail-
able on the connector J6.
The communication protocol is the same (see the
structure below), but only the RS 485 manages the ad-
dress field. Therefore to enable the RS 485 is necessary
to select the type of communication as well as the de-
vice address by means of the Navigator software.

Communication Format

•
8 data bit
•
no parity
•
1 stop bit
•
baud rate: 600/1200/2400/4800/9600 programmable

Communication Protocol

The communication protocol is a MASTER/SLAVE type
where:
•
Host = MASTER
•
Controller = SLAVE
The communication is performed in the following way:
1. the host (MASTER) send a MESSAGE + CRC to the
controller (SLAVE);
2. the controller answer with an ANSWER + CRC to the
host.
The MESSAGE is a string with the following format:
<STX>+<ADDR>+<WIN>+<COM>+<DATA>+<ETX>+<CRC>
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TECHNICAL INFORMATION
87-901-001-01 (A)