Status Registers; Table 58 Modbus Status Registers (Read-Only); Table 59 Modbus Device Status Bits; B.4.2 Status Registers - Vaisala MHT410 User Manual

Register Address
Number (Hexadecimal)
259 0102
hex
260 0103
hex
261 0104
hex
264 0107
hex
265 0108
hex
266 0109
hex
267 010A
hex
268 010B
hex
269 010C
hex
270 010D
hex
PDU address Actual address bytes used in a Modbus Protocol Data Unit
LSW Least Significant Word (bits 15...0)
MSW Most Significant Word (bits 31...16)
16-bit integer Numeric value in range -32768...32767
32-bit float Floating point number encoded according to IEEE 754
B.4.2 Status Registers
Table 58 Modbus Status Registers (Read-only)
Register Number
513
Table 59 Modbus Device Status Bits
Output Output Name
(bit mask)
0 Status OK
1 Critical Error active
2 Error active
Register Description
H , Daily ROC
2
H , Weekly ROC
2
H , Monthly ROC
2
Oil moisture, relative
saturation
Oil moisture, current
Oil moisture, 24h
average
Oil moisture, Daily ROC
Oil moisture, Weekly
ROC
Oil moisture, Monthly
ROC
Oil temperature
Address (Hexadecimal)
02 00
hex
Notes
Maintenance needed.
Device may recover automatically.
Appendix B – Modbus Reference
Data Format
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
16-bit integer
Register Description
Device status bits
Unit
ppm (in oil)
v
ppm (in oil)
v
ppm (in oil)
v
%RS*10
ppm *10
w
ppm *10
w
ppm *10
w
ppm *10
w
ppm *10
w
°C *10
Data Format
16-bit integer
107