Rice Lake PR5230 Fieldbus Transmitter - 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.