Communications: Modbus Register Map; Product Id (R40,064) - Siemens SITRANS LR 300 Instruction Manual

Communications: Modbus Register Map

The memory map of the IQ-300 occupies the Modbus holding registers (R40,001 and up).
This map is used when the protocol is Modbus RTU slave or Modbus ASCII slave.
Register Map for Most Common Data
Legend
Type
Start
Data Type
Description
#R
Read/Write
The SITRANS LR 300 was designed to make it easy for master devices to get useful
information via Modbus. The chart below gives an overview of the different sections. A
more detailed explanation of each section follows.
Type Description
ID
Milltronics
Product Code
Point Data Reading (1)
Volume (1)
I/O mA Output
Data
Parameter Parameter
Values
1.
Maximum registers shown, fewer may be used depending on options installed.

Product ID (R40,064)

This value identifies the Siemens Milltronics device type. For the SITRANS LR 300, the
value is 3.
7ML19985CL02
The type of data held in the group of registers.
The first register to hold the referenced data.
The possible values of the data in the register. See Data Types on page
for more information.
The type of data held in the individual registers.
The number of registers used for the referenced data.
Indicates whether the register is readable, writeable, or both.
Start
Siemens 40,064
41,010
41,020
41,110
43,997 to
Access 44,999
SITRANS LR 300– INSTRUCTION MANUAL
1
Data Type
#R
1 3
1 -20,000 to 20,000
1 -20,000 to 20,000
1 400 to 2,000
Depends on
Parameter
Read/
Write
R
R
R
R/W
R/W
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