RF602 [Revision 1.2.0] 28.01.2019
Laser Triangulation Sensors. RF602 Series
11
10.9. Factory parameters table
The sensors are supplied with the parameters shown in the table below:
Parameter
Value
Time limit for integration
3200 (3,2 ms)
Sampling mode
time
Sampling period
5000 (5 ms)
Point of zero
Beginning of the range
Line AL operation mode
1
Time lock of the result
2 (10 ms)
Method of results averaging
Over a number of results
Number of averaged values
1
The parameters are stored in nonvolatile memory of the sensor. Correct changing of
the parameters is carried out by using the parameterization program supplied with the
sensor or a user program.
11. Description of RS232 and RS485 interfaces
Data exchange with the sensor is carried out over the RIFTEK or Modbus RTU
protocols in binary format or in the ASCII format. The protocol and the data format are
selected using the parametrization program.
11.1. RS232 port
The RS232 port ensures a “point-to-point” connection and allows the sensor to be
connected directly to RS232 port of a computer or controller.
11.2. RS485 port
In accordance with the protocol accepted and hardware capability, the RS485 port
makes it possible to connect up to 127 sensors to one data collection unit by a common
bus circuit.
11.3. Serial data transmission format
Data message has the following format:
1 start-bit
8 data bits
1 even bit
1 stop-bit
11.4. Modes of data transfer
Through these serial interfaces the measurement data can be obtained by two
methods:
·
by single requests (inquiries);
·
by automatic data streaming (stream).
11.5. Communication sessions types
The communications protocol is formed by communication sessions, which are only
initiated by the ‘master’ (PC, controller). There are two kinds of sessions with such
structures:
1) “request”, [“message”] — [“answer”],
square brackets include optional elements.
2) “request” — “data stream” — [“request”].
