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
6063
6467
6871
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 ¼d 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 ¼d of 0
Write data
Bit address Value in 32-bit integer format
W100 Zero device:
Write value 256
10 ModBus protocol X3 Process Indicator PR 5410
EN-289 Minebea Intec