4-63
(3) Communication protocol
The method of the communication protocol is shown below in the time diagram.
The following is indicated.
(1): Frame transmitted from external control machines to the inverter
(2): Frame replied from inverter to the external control machines
Frame (2)
from the inverter is a reply to frame (1) from the external control machine, the active output
is not operated.
The commands are shown below;
Command list
Chapter 4 Explanation of function
Command
Command description
Advisability
of all code
Notes
00
Forward / backward / stop command
9
01
Setting of frequency command
9
02
Setting of intelligent terminal state
9
03
Collective reading of monitor data
-
04
Reading of inverter state
-
05
Reading of trip history
-
06
Reading of 1 setting item
-
07
Setting of 1 set item
9
08
Returning of each set value to initial
value
9
This doesn’t operate unless b084 is
set to (01 or 02). (Clear of the trip
origin)
09
This checks whether set value can be
Conserved to EEPROM or not.
-
0A
This conserves set value to EEPROM
9
0B
Recalculation of internal constant.
9
Waiting time (setting with operator)
Time
Inverter
External
control
machines
(2)
(1)
C078