Flintec FAD-40 - Manual (Page 16)

FAD-40 Technical Manual, Rev. 1.06 December 2012 Page 16 of 52
Checksum
The checksum can be enabled or disabled within BSI data format. The checksum calculation can be found in
the related data format description. Default setting: „Enable‟.
Baud Rate
One of the following baudrate will be selected for the RS-485 communication port.
1200 2400 4800 9600 (default setting)
19200 38400 57600
Data Length and Parity
The data length and parity can be selected as 8 None 1 (default), 7 Odd 1 or 7 Even 1.
Address
The address range is 01 (default) to 31. If you enter 0, the instrument will operate without address data.
Modbus RTU Setup (for FAD-40MB only)
RS-485 Data Format: „Modbus RTU‟,
RS-485 Data Length & Parity: „8 none 1‟,
RS-485 Address: „01‟ to „31‟
5.3.3. Scale Build and Calibration
Scale build, operation mode selection and scale calibration is performed in the calibration tab of xFace as
shown in figure 5.4. Please follow the procedure in the sequence as described in the following chapters.
Mode: Here the user selects the operation mode and the polarity.
Write to A/D Converter: Click this button to save the operation mode and polarity to A/D
Converter.
Calibration block: This block allows the user to calibrate with test weights.
eCal Calibration: This block allows the user to calibrate without test weights.
Calibration Coefficients: This function allows the user to restore a calibration if the calibration
coefficients have been noted before.
Figure 5.4
– Calibration
Mode selection
FAD-40 instruments have three operation modes which are:
Count Mode: Filtered and normalized ADC count data will be transmitted in this mode. The
calibration is performed at the PLC, if any.
Weighing Mode: Unipolar weight data in calibrated weighing unit will be transmitted. This mode is
compatible to OIML R76 and EN 45501.
Force Mode: Bipolar or unipolar force measurement data in calibrated force unit will be transmitted.