Vaisala HUMICAP MMT162 Podręcznik Użytkownika Pobierz pdf (Strona 73)

Appendix A _________________________________________________________ Modbus Reference

VAISALA ________________________________________________________________________ 71

Modbus Register Map

Table 14 Modbus Register Map

Logical

Address

(decimal)

PDU Address

(hexadecimal)

Data

Format

Type

Notes

00 02

(measured)

LSW

MSW

32-bit

float

read-only

°C

00 03

00 1C

(measured)

LSW

MSW

32-bit

float

read-only

00 1D

00 22

O (oil) (measured) *

LSW

MSW

32-bit

float

read-only

ppm

00 23

513

02 00

Fault status

16-bit

boolean

read-only

1 = no errors

516

02 03

Error Code

LSW

MSW

32-bit

bit field

read-only

0 = no errors

517

02 04

785

03 10

Oil factor A (set value) *

LSW

MSW

32-bit

float

read/write

786

03 11

787

03 12

Oil factor B (set value) *

LSW

MSW

32-bit

float

read/write

788

03 13

1537

06 00

Address

16-bit

integer

read/write

1…255

(1 … 247 allowed

in Modbus)

* Availability of the register depends on the device model.

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 0 … 65535.

16-bit boolean

Numeric value, 0 or 1.

32-bit bit field

32 individual values, each 0 or 1.

32-bit float

Floating point number encoded according to IEEE 754.

read-only

read/write

1 2 ... 68 69 70 71 72 73 74 75

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