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sensor, format the data received from the sensor and setting the SLAVE device
into the sleep mode for a given period of time. The beginning of the script is
marked by [beg] and the end by [end] directives.
Table 17. An example of the executable script file with the sequence of commands controlling the
MIDL data logger
[beg]
port(9600)
filename("RS485t.txt")
outp(RS485,"Command sent to the work interface RS485 \n\r")
fprintf("Result of the measurement received by RS485: ")
inp(RS485,14,4000)
sleep(120)
[end]
When the defined period of time, when the device is in the sleep mode,
terminates, the script file executes from the beginning.
The script commands for autonomic, cyclic control measurements by the
SLAVE device are presented in Table 18.
Each sensor connected to the SLAVE module should “understand” the script
commands. This requires that each sensor is provided with an appropriate
hardware and software interface. Therefore the term “sensor” means a device
converting the analysed signal (ex temperature, pressure, electrical conductivity,
etc.) into the corresponding electrical signal.
Table 18. Script file commands for MIDL data logger control
Command
port(baudrate, databits,
stopbits, paritychecking);
outp(port, “data”);
inp(port, length, wait);
filename(“name”);
sleep(sec);
fprintf(”format”);
Description
Setting parameters of the serial port
Sending data by the working interface
Receiving data from the working interface
Setting the file name where the data received from
working interfaces will be stored
Bringing the MIDL into the sleep mode for defined
number of seconds
Introduction of additional formatted data into the
output file
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