Interface Description - BYK haze-gard plus Betriebsanleitung

11. Interface Description

The instrument is equipped with a
serial interface (RS-232) by way of
which the instrument can be
controlled and measurement data
can be processed further by a PC,
or data can be output on an
appropriate printer. The unit has a
9-pin Sub-D connector for data
transfer.
1
6
9
5
haze-gard plus
3 TxD
2 RxD
7 RTS
8 CTS
5 GND
Transfer Rate and Format
Serial asynchronous transfer is preset
on the instrument, and is performed
with the following format:
9600 baud, 8 data bits, no parity,
1 stop bit.
Control Commands
4Fh (ASCII code for '0') Starts
online operation.
The instrument transmits a 4Fh and
sends back a 21h as the
acknowledgement signal.
disabled, except for the <operate>
and <reference> buttons and the
PC
foot switch.
RxD 3
Then the instrument status
TxD 2
(10 bytes) is transmitted to the
CTS 5
computer.
RTS 4
GND 7