Basic read/write
The mapping mechanisms are the same as for extended mapping, but without the
2 registers to map BA-Status-Flags, Priority and Reliability.
Example of a binary/multistate input object with basic read:
Input register address Data item structure
X Present value
Example of an analog/unsigned object with basic read:
Input register address Data item structure
X Present value
X+1
The address distribution is based on the following rule:
Command Object type Mapping Address range
Read Analog/Unsigned Extend 3x0000~3x0999
Basic 3x1000~3x1999
Binary/Multistate Extend 3x2000~3x2999
Basic 3x3000~3x3999
Read/write Analog/Unsigned Extend 4x0000~4x0999
Basic 4x1000~4x1999
Binary/Multistate Extend 4x2000~4x2999
Basic 4x3000~4x3999
Read/write Schedule ‑ 4x6000~
Read/write Device information ‑ 4x9000~
Engineering of communicative devices
Modbus slave
6
A6V10733786_en_c 165 | 170
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