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FDT-25W Wall Mounter Ultrasonic Flowmeter
19
M45
Flow rate scale factor. The default value is ‘1’.
Keep this value as ‘1’, when no calibration has been made.
M46
Networks address identification number. Any integer can be entered except 13(0DH, carriage
return), 10 (0AH, line feeding), 42 (2AH), 38, 65535.
Every set of the instrument in a network environment should have a unique IDN. Please refer to
the chapter for communication.
M47
System locker to avoid modification of the system parameters.
If password is forgotten, you could send a command ‘LOCK0’ to the serial input to unlock. Or
you can write 0 to REGISTER49-50 under MODBUS protocol.
M48
Entry to linearity correcting data inputs. By using of this function, the non-linearity of flow meter
will be corrected. Correcting data shall be obtained by careful calibration.
M49
Displays the input contents for the serial port.
By checking the displays, you can know if the communication is ok.
M50
Switches for the built-in data logger. There are as many as 22 different items can be chosen.
To turn this function, select ‘YES’ the system will ask for selecting the items. There are 22 items
available. Turn on all those items you want to output
M51
Window to setup the time of scheduled output function (data logger, or Thermo-printer). This
includes start time, time interval and how many times of output. When a number great than
8000 entered for the times of output, It means the output will be keeping always. The minimum
time interval is 1 second and the maximum is 24 hours.
M52
Data logging direction control.
(1) If ‘Send to RS485’ is selected, all the data produced by the data logger will be transmitted
out through the RS-232/RS485 interface
(2) If ‘To the internal serial BUS is selected, the data will be transmitted to the internal serial bus
which allows a thermal printer, or a 4-20mA analog output module, to be connected to it.
M53
Display analog inputs, AI5, current value and its corresponding temperature or pressure or
liquid level value.
M54
Pulse width setup for the OCT (OCT1) output. Minimum is 6 ms, maximum is 1000 ms.
M55
Select analog output (4-20mA current loop, or CL) mode. Available options:
(0) 4-20mA output mode (setup the output range from 4-20mA)
(1) 0-20mA output mode (setup the output range from 4-20mA, This mode can only be used
with Version-15 flow meter)
(2) Serial port controls 0-20mA
(3) 4-20mA corresponding fluid sound speed
(4) 20-4-20mA mode
(5) 0-4-20mA mode (can only be used with Version-15 flow meter)
(6)20-0-20mA mode(can only be used with Version-15 flow meter)
(7) 4-20mA corresponding flow velocity
(8)4-20mA corresponding heat flow rate
M56
4mA or 0mA output value,
Set the value which corresponds to 4mA or 0mA output current (4mA or 0mA is determined by
the setting in M55)
M57
20mA output value,
Set the value which corresponds to 20mA output current
M58
Current loop verification