7EN02-0438-14

Unit table

The following data types appear in the Modbus register list:

Type

Description

Range

UInt16

16 bit unsigned integer

0 to 65535

Int16

16 bit signed integer

-32768 to +32767

UInt32

32 bit unsigned integer

0 to 4 294 967 295

Int64

64 bit unsigned integer

0 to 18 446 744 073 709 551 615

UTF8

8 bit field

Multi byte character encoding for Unicode

Float32

32 bit value

Standard representation IEEE for floating number (with single precision))

Bitmap

DATETIME

See below table

DATETIME format:

Word

Bits

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

0

1

Reserved

R4 (0)

Year (0 – 127)

2

0

Month (1 – 12)

WD (0)

Day (1 – 31)

3

SU (0)

0

Hour (0 – 23)

iV

0

Minute (0 – 59)

4

Millisecond (0 – 59999)

R4 :

Year :

Month :

Day :

Hour :

Minute :

Millisecond :

WD (day of the week) :

SU (summer time) :

iV (validity of received data) :

Reserved Bit

7 bits (year from 2000)

4 bits

5 bits

5 bits

6 bits

2 octets

1 – 7: Sunday – Saturday

Bit to 0 if this parameter is not used

Bit to 0 if this parameter is not valid or not used

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