47
AcuRev
1200
2.1 Frame Format
Table 5-1 Data Frame Format
2.2 Address Field
The address field is at the start of the frame. It is composed of 1 byte (8 bits), its
decimal value range is 0-247.
A master addresses a slave by placing the slave address in the address field of the
message. When the slave sends its response, it places its own address in this address field
of the response to let the master know which slave is responding.
2.3 Function Field
When a message is sent from a master to a slave device the function code field tells
the slave what kind of action to perform.
Table 5-2 Function Code
2.4 Data Field
Data field contains the data that terminals need to complete the request and the
data that terminals respond to the request. This data may be a numerical value, address or
setting. For example, Function Code tells the terminal to read one register, Data Field needs
to specify reading from which register and how many registers to read.
Address
Function
Data
Check
8-Bits
8-Bits
N x 8-Bits
16-Bits
Code
Meaning
Action
03
Read data register
Obtain current binary of 1 or more register
16
Preset register
Set binary value to 1 or more register
Содержание AcuRev 1200 Series
Страница 1: ...User s Manual AcuRev 1200 Energy Meter...
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Страница 9: ...1 AcuRev 1200 1 1 Meter Overview 1 2 Areas of Application 1 3 Product Features Chapter 1 Introduction...
Страница 13: ...5 AcuRev 1200 Chapter 2 Installation 2 1 Appearance and Dimensions 2 2 Installation Methods 2 3 Wiring...
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Страница 35: ...27 AcuRev 1200 Figure 4 1 Basic setting parameters in the software...
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