10 ModBus protocol
10.1 General description
The ModBus protocol implemented in the instrument permits fast, simple and reliable
communication between a PC or a PLC and up to 127 instruments.
10.2 SPM data in PR 1612 ModBus mode
For access via ModBus, the PR 1612 ModBus mode is switched on via
- [Serial ports]-
[ModBus-RTU]- [Param]- [ModBus mode]- [PR 1612 ModBus].
Read data
Byte address
Weight in 32-bit integer format
60
63
64
67
68
71
Gross weight
Net weight (gross if not tared)
Tare weight (0 if not tared)
Read data
Address
Read "Word" (display in binary format)
W201
0E00000T 00000000
E: ADC error
T: Instrument is tared.
W203
000S00MZ 00000000
S: Device is in setup mode.
M: Weight is stable (standstill).
Z: Weight within ¼ d of 0
W204
0000D000 00000000
D: Gross weight <0 or >Max (dimmed)
W205
TA000000 00000000
T: Instrument is tared.
A: Analog test is active.
W231
00021MRZ 00000000
2: Limit 2
1: Limit 1
M: Weight is stable (standstill).
R: Weight within zero-setting range
Z: Weight within ¼ d of 0
Write data
Bit address
Value in 32-bit integer format
W100
Zero device:
Write value 256
10 ModBus protocol
Transmitter in field housing PR 5230
EN-253
Minebea Intec