PRECITEC CHRocodile C, Руководство по эксплуатации, Страница: 28 / 63

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Multipoint connector interface
Data transmission can be done through RS422/RS232 serial communication, using the so called $-
protocol. Two formats are available (ASCII/BIN) for sending the data from the optical sensor via the
RS422.
The data can thus be transferred to a computer as ASCII-symbols (telegram
format
) and e.g. viewed with a terminal program (e.g. Tera Term, Freeware).
Output in BIN format, command: $BIN
Output in ASCII format, command: $ASC
The transfer rate for the serial interface port is selected under serial port baud rate .
The standard Baud rates available for selection are 9600, 19200, 38400, 57600, 230400, 460800 ,
921600 Baud and 1843200 Baud. Arbitrary nonstandard Baud rates can also be configured.
3.1.2 CHRocodile C integrated on measurement system:
In addition to the Power supply and Ethernet connector or multipoint connector interface used for
stand-alone device, the CHRocodile C needs to be connected to other interfaces to be integrated into
complex measurement configuration systems. The other possible interfaces are described hereafter:
- The multipoint connector interface for Trigger Input/Output and Serial interface RS422,
- The 8 pins mini-DIN connector for external analogue converter box to add 2 encoder inputs.
Encoder-input
The incremental encoder-input makes it possible to precisely assign the measurement point and axis
positions without additional hardware. The CHRocodile C can manage with 2-axis Encoders if the
optional analogue converter box is connected to the CHRocodile C 8-pins mini-DIN connector.
For an exact distance or thickness measurement it is necessary for every measurement value to be
assigned to the exactly correct spatial coordinates. This data must be recorded in the system and
transferred to the evaluation processing unit over the internal interface. To accomplish this, the sensor
must be equipped with the analogue box accessory.
Default are the encoder inputs not terminated.
Tye Sw0t02 to GND to terminate with 120 Ohm channel 0 to 2
Tye Sw3t04 to GND to terminate with 120 Ohm channel 3 to 4