4x50 EtherNetIP.190129.1v4: User manual
WWW.EILERSEN.COM
Version: 2020-11-24, rev.: 1v4
Page: 17
4) Data Processing
4.1 Zeroing, calibration and weight calculation
Calculation of system weight(s) is done by addition of the weight registers for
the load cells belonging to the system. This is explained below.
Note
that the
result is only valid if all status registers for the load cells in question indicate
no errors. It should also be noted that it is up to the master to ensure the us-
age of consistent load cell data when calculating the system weight (the used
data should come from the same telegram).
4.1.1 Zeroing of weighing system
Zeroing of a weighing system (all load cells in the specific system) should be
performed as follows, taking into account that no load cell errors may be pre-
sent during the zeroing procedure:
1)
The weighing arrangement should be empty and clean.
2)
The EtherNetIP master verifies that no load cell errors are present, af-
ter which it reads and stores the actual weight signals for the load cells
of the actual system in corresponding zeroing registers:
LcZero[x]=LcSignal[x]
3)
After this the uncalibrated gross weight for load cell
X
can be calculat-
ed as:
LcGross[
X
] = LcSignal[
X
]
–
LcZero[
X
]