Rice Lake PR5220 Ethernet Transmitter - Manual (Page 136)

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.