RX72M Group
Single-Chip Motor Control via EtherCAT Communications
R01AN5434EJ0110 Rev.1.10
Page 20 of 85
Aug.31.2020
3.2
State Transitions
Among the finite state automata (FSAs) defined in the CiA402 standard, the sample program supports the
following modes.
In Figure 3-2, the state where torque is being applied through the motor is "Operation enabled". The motor is
activated at the times of transitions from "Switched on" to "Operation enabled" (transition 4). The motor is
deactivated at the times of transitions from "Operation enabled" to several other states (transitions 5, 8, 9).
However, at the times of transitions from "Operation enabled" to "Quick stop active" (transition 11) or the
timing of transition to "Fault reaction active" (transition 13), the application of torque is maintained.
Figure 3-2 CiA402 State Transition Diagram
Not ready to
Switch on
Switch on
disabled
Ready to
Switch on
Switched on
Operation
enabled
Quick stop
active
Fault
Fault reaction
active
0
1
2
3
4
5
6
7
9
8
10
12
15
13
16
Start
11
14