Modbus Communications 7828 Density Transmitter Technical Manual
D-16 78285000_AA
D.7.2 EXAMPLE 2: READING LINE DENSITY (32-BIT REGISTER SIZE)
The 7828 is assumed to have been configured with Register Size = 32-bit (Register 48 =
FFFF
16
), and has slave address = 1
The following string will read the line density, which is held in Register 257 (0101
16
)
01 03 01 01 00 01 D4 36
The reply from the 7828 will be the same as for Example 1.
Slave address
(hex)
Command number: 3
(Read Register)
Register address
Hi byte
Register address
Lo byte
Number of
registers to read
Hi byte
Number of
registers to read
Lo byte
Checksum
(Automatically
inserted if you are
using ADView.)