Minebea Intec MiNexx-link-E PR 5215/00, Technical Documentation Manual

Page: 112 / 150

9. Fieldbus interface | 9.2 - Scale protocol | 112
Field Size Function
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 measur­
ing range. No valid weight data is specified
(gross > FSD+overload).
AboveMax 1 bit The weight value has exceeded Max (FSD),
but is still within Max + permissible overload
(gross ≤ FSD+overload).
ADCError 1 bit AD conversion error, see Chapter Function
number 1: scale status (read) .
9.2.2 Reading and writing data with function numbers
9.2.2.1 Reading 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.
Action of the master Slave reaction
Write function number to Read_Value_S­
elect .
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).