Chapter 4
Explanation of Functions
4-116
4.4.1 Communication in ASCII mode
(1) Communication protocol
The communication between the inverter and external control system is based on the following protocol:
(1): Frame that is sent from the external control system to the inverter
(2): Frame that is sent from the inverter to the external control system
The inverter sends frame (2) as a response always after receiving frame (1). The inverter does not actively output any
frame to the external control system.
The following table lists the frames (commands) used for communication:
Commands
Command
Function
Broadcast to all
stations
Remarks
00
Instructs the inverter to drive the motor (for
forward or reverse rotation) or stop the motor.
Available
01
Sets the inverter output frequency.
Available
02
Turns specified intelligent input terminals on or
off.
Available
03
Reads all monitored data.
Not available
04
Reads the inverter status.
Not available
05
Reads a specified setting item.
Not available
06
Writes data to a specified setting item.
Not available
07
Initializes specified settings.
Available
08
Instructs the inverter to drive the motor (for
forward or reverse rotation) or stop the motor.
Available
This command can operate only when
"01" or "02" has been specified for the
initialization mode (b084).
(Otherwise, only the trip history data is
cleared.)
09
Checks whether set data can be stored in the
EEPROM.
Not available
0A
Stores set data in the EEPROM.
Available
0B
Recalculates the constants set in the inverter.
Available
(2)
(1)
C078
External control system
Inverter
Waiting time (to be set with the digital operator)
Time
Summary of Contents for SJ700D-004L
Page 16: ...Contents Appendix Appendix A 1 Index Index Index 1 ...
Page 44: ...Chapter 2 Installation and Wiring 2 23 Memo ...
Page 70: ...Chapter 3 Operation 3 25 Memo ...
Page 248: ...Chapter 5 Error Codes 5 11 Memo ...
Page 256: ...Chapter6 Maintenance and Inspection 6 7 Memo ...