E+E Elektronik EE895 User Manual page 21

6 Packet Format for Write Multiple Function Code 0x10
Request:
Modbus Function
Address Code
YY 10
Response from the E+E Modbus device:
Modbus
Address
YY
The supported addresses can be found in the datasheet and in the user manual of the specific E+E
device.
7 Data Encoding of Float Values
The Modbus standard allows for flexible word order, values larger than 16 bits, such as floating point
values (32 Bit).
7.1 IEEE 754 Format
The IEEE standard definition of floating point values:
SEEEEEEE
Byte 1
S ... Sign
E ... Exponent
M ... 23 Bit Mantissa
7.2 Modbus Floating Point Format
E+E devices use the Modbus floating point format. The byte pairs 1, 2 and 3, 4 are inverted as follows.
SEEEEEEE
Byte 3
User Manual EE895 Miniature Sensor Module for CO
Communication
Address
HB LB
YY YY
Communication Address
Function
Code
HB
10 YY
EMMMMMMM
Byte 2
EMMMMMMM
Byte 4
, T and p
2
Qunatity of
Byte
Registers
Count
HB LB
YY YY YY
Quantity of Registers
LB HB
YY YY
MMMMMMMM
Byte 3
MMMMMMMM
Byte 1
N * Register
CRC
Values
HB LB LB
YY YY CC
CRC
LB LB
YY CC
MMMMMMMM
Byte 4
MMMMMMMM
Byte 2
HB
CC
HB
CC
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