Download  Print this page

Mitsubishi Electric FR-F700PJ Instruction Manual Page 245

Air-conditioning inverter.
Hide thumbs


Communication operation and setting
Message format
Query communication
Programmable controller (master)
Broadcast communication
Programmable controller (master)
Data check time
Various monitors, operation command,
frequency setting (RAM)
Parameter read/write, frequency setting
Parameter clear/all clear
Reset command
1) Query
The master sends a message to the slave (= inverter) at the specified address.
2) Normal Response
After receiving the query from the master, the slave executes the requested function and returns the corresponding normal
response to the master.
3) Error Response
If an invalid function code, address or data is received, the slave returns it to the master.
When a response description is returned, the error code indicating that the request from the master cannot be executed is
No response is returned for the hardware-detected error, frame error and CRC check error.
4) Broadcast
By specifying address 0, the master can send a message to all slaves. All slaves that received the message from the
master execute the requested function. In this communication, the slaves do not return a response to the master.
The inverter performs the function independently of the inverter station number setting (Pr. 117) during broadcast communication.
Query message
Inverter (slave)
Data absence time
(3.5 bytes or more)
Query message
Inverter (slave)
Check Time
No answer
Inverter response time
(Refer to the following table for the data check time)
Response message
No Response


Table of Contents

   Also See for Mitsubishi Electric FR-F700PJ

Comments to this Manuals

Symbols: 0
Latest comments: