Minebea Intec PR5900 - Reading and Writing Data with Function Numbers

Field Size Function
OutOfRange 1 bit Below zero or above max. (FSD).
Standstill 1 bit The scale is stable.
InsideZSR 1 bit The gross weight value is within the zero setting range.
CenterZero 1 bit The weight value is within center zero (0 ±0.25 d).
BelowZero 1 bit The weight value is negative (gross < 0 d).
Overload 1 bit The weight value has exceeded the measuring range.
No valid weight data is specied (gross > FSD+over-
load).
AboveMax 1 bit The weight value has exceeded the max. (FSD), but is
still within max. + permissible overload (gross ≤ FS-
D+overload).
ADUError 1 bit AD conversion error, see Chapter 8.2.5.1.
8.2.2 Reading and writing data with function numbers
8.2.2.1 Reading data
Procedure:
Action of the master Slave reaction
Write function number to
Read_Value_Select.
Write requested data in Read_Data (bytes
0-3).
Copy Read_Value_Select to
Read_Value_Selected.
Wait until Read_Value_Selected =
Read_Value_Select.
Read requested data in Read_Data (bytes
0-3).
8.2.2.2 Writing data
Procedure:
1. Write the function number as Read_Value_Select in byte 4 of the write window (e.g.,
9 = net weight).
2. Wait until Read_Value_Selected in byte 4 of the read window is equal to
Read_Value_Select of the write window.
The requested value is available in bytes 0-3.
1. Wait until Write_Active = 0 in the read window (slave is ready to receive new data).
2. Write value in bytes 0-3 of the write window.
3. Write the function number as Write_Value_Select in byte 5 of the write window (e.g.,
"Basic” application: 190 = analog output 1).
4. Wait until Write_Active = 1 in the read window.
8 Fieldbus interface Process Controller Maxxis 5 PR 5900
EN-349 Minebea Intec