Yokogawa PR300 Power and Energy Meter - Manual (Page 24)

<Toc> <Ind> <3. Procedures for Setting PR300 Functions>
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IM 77C01E01-10E
3. Procedures for Setting PR300 Functions
To set the functions of the PR300, use the protocols described in Chapter 4, “PC
Link Communication Protocol,” Chapter 5, “Modobus/RTU and ASCII Communica-
tion Protocols,” or Chapter 6, “Modbus/TCP Communication Protocol” according to
the instructions in this chapter.
For details of each function, refer to the PR300 Power and Energy Meter User’s
Manual (electronic manual).
For how to read the tables in this chapter, refer to Chapter 7, “Functions and Usage
of D Registers.”
The PR300 offers registers for floating-point data. To perform settings via communi-
cation from higher-level device, floating-point data is displayed by IEEE754 (single
precision).
NOTE
• The PR300 has data (D register) the unit of which is two words. When 2-word data
need to be written or read, writing or reading operations must be performed for the 2-
word data at the same time.
• Even if data written to the D register is out of the effective range, a normal response is
returned. The part of the written data within the effective range becomes effective on
the PR300 when the equivalent setting change status is written for that data.