Fairbanks X SERIES PR 5220 ETHERNET TRANSMITTER - Manual (Page 81)

Section 7: Fieldbus Interface
05/11 82 51209 Revision 2
7.2 Description of the I/O Area (Read / Write Window)
7.2.1 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 free free free free outp. 3 outp. 2 outp. 1 Free / digital
outputs
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 3 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
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 instrument is tared.
SetZero The instrument is set to zero.