6 word addresses, Word addresses, Pr 5230 instrument manual j-bus/modbus protocol – Rice Lake PR5230 Fieldbus Transmitter User Manual
Page 175
PR 5230 Instrument Manual
J-Bus/ModBus Protocol
Sartorius
EN-175
Example of an error message, which was generated by an invalid function number with ModBus-RTU.
Command
1
9
0
0
0
0
CRC
CRC
Reply
1
137
1
CRC
CRC
Example for ModBus-TCP:
Command
47
16
0
0
0
8
0
9
0
0
0
0
Reply
47
16
0
0
0
3
0
137
1
The individual bytes are shown.
6.6
Word Addresses
16 Gross weight, 1
st
byte (MSB)
Gross weight, 2
nd
byte
17 Gross weight, 3
rd
byte
Gross weight, 4
th
byte (LSB)
2
39
38
37
36
35
34
33
32
47
46
45
44
43
42
41
40
7
119 118 117 116 115 114 113 112 127 126 125 124 123 122 121 120
Address
Description
Read bits:
32
ADC error
33
Above Max (full scale deflection)
34
Above Max + n d
35
Below zero (minus sign)
36
Zero within ¼ d
37
Within zero setting range
38
The weight is stable
39
The weight is below zero or above Max
Write bits:
112
Set zero
113
Set tare
114
Reset tare
For further bits, see Chapter 10.