Sartorius PR 5220 Series - Fieldbus Interface: I;O Area

Fieldbus Interface PR 5220 Instrument Manual
EN-136 Sartorius
7.2 Description of the I/O Area (Read / Write Window)
Input Area
Data transmission from the master to the PR 5220 (slave) is via the input area.
Weight or data requests are transmitted to the slave by the master.
The master has write access; the slave has read access.
Byte
Name
Description
0
Write_Value (MSB)
e.g. limit value
1
:::
"
2 :::
"
3
Write_Value (LSB)
"
4
Read_Value_Select
e.g. gross weight
5
Write_Value_Select
Write:
Limit 1 On
6
free
Res M 3
Res M 2
Res M 1
free
Set M 3
Set M 2
Set M 1
Reset/set marker
7
Get
FixTare
Set
FixTare
Res
Power
Res
Test
Set
Test
Res
Tare
Set
Tare
Set
Zero
Control byte,
response to
0->1
transition
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
The
control byte activates the corresponding action in the instrument with a set bit.
After execution of the operation, the bit should be reset.
Variable
Function
Write_Value
The weight value is transmitted as a binary 32-bit value with plus or minus sign.
Data type:
DINT
Read_Value_Select
For selecting the value sent by the instrument
Write_Value_Select
For selecting the function to be executed by the instrument
Res M 1…3
Reset marker 1…3.
Set M 1…3
Set marker 1…3.
GetFixTare
The gross weight is copied into the fixtare memory.
SetFixTare
Taring is performed using the value stored in the fixtare memory.
ResPower
The
Power_Fail
bit in the output area is deleted.
ResTest
The test operating mode is finished.
SetTest
The test operating mode is started. Now the test value can be read out by reading
out the gross weight.
ResTare
Tare is reset.
SetTare
The scale is tared.
SetZero
The scale is set to zero.