Metronic DL7 Series, Operating Manual

Page: 95 / 96

DL7, DL7L
95
16
MODBUS RTU / MODBUS TCP TRANSMISSION PROTOCOL
16.1 General information
Process values and totalizers are available as holding registers and input registers . It is
only possible to read the data.
16.1.1 Data types
uint/int
16bit
Reg
(Bit 15…0)
HByte LByte
2. 1.
uint/int/float
32bit
Reg_L (Bit 15…0) Reg_H (Bit 31…16)
HByte LByte HByte LByte
2. 1. 4. 3.
uint/int/float
32bit sw
Reg_H (Bit 31…16) Reg_L (Bit 15…0)
HByte LByte HByte LByte
4. 3. 2. 1.
int/double
64bit
Reg_L (Bit 15…0) Reg_H (Bit 31…16) Reg_L (Bit 47…32) Reg_H (Bit 63…48)
HByte LByte HByte LByte HByte LByte HByte LByte
2. 1. 4. 3. 6. 5. 8. 7.
16.2 Registers addresses
Process values are available in the floating-point format as per IEEE-754 for the 32-bit
digit type with the floating point and single precision (32-bit floating point single).
The totalizers are available in the floating-point format as per IEEE-754 for the 64-bit
digit type with the floating point and double precision (64-bit floating point double).
16.2.1 Addresses table of Process values
No. measuring
channel
Register number Modbus address
Size
(in registers)
1 300000 / 400000 00 2 (32bit float)
2 300002 / 400002 02 2 (32bit float)
… … … …
… … … …
99 300196 / 400196 196 2 (32bit float)
100 300198 / 400198 198 2 (32bit float)