Appendices
A-30
NJ/NX-series CPU Unit Motion Control Userās Manual (W507)
This section describes the relationship between the setting values of the PDS State Control Method
axis parameter and the PDS states.
ļ¬ When PDS State Control Method Is Set to 0
The following operation is performed when PDS State Control Method is set to 0: Switched on by
Servo OFF.
ā¢ After communications with the Servo Drive is established, MC Function Module automatically
changes the PDS state to Servo Ready (Switched on).
ā¢ If Enable of the MC_Power (Power Servo) instruction changes to TRUE in the Servo Ready
(Switched on) state, the PDS state changes to Servo ON (Operation enabled). This operation cor-
responds to 4: Enable operation in the state transition diagram.
ā¢ If Enable of the MC_Power (Power Servo) instruction changes to FALSE in the Servo ON (Opera-
tion enabled) state, the PDS state changes to Servo Ready (Switched on). This operation corre-
sponds to 5: Disable operation in the state transition diagram.
ļ¬ When PDS State Control Method Is Set to 1
The following operation is performed when PDS State Control Method is set to 1: Ready to
switched on by Servo OFF.
ā¢ After communications with the Servo Drive is established, MC Function Module automatically
changes the PDS state to Main Power OFF (Ready to switch on).
ā¢ If Enable of the MC_Power (Power Servo) instruction changes to TRUE in the Main Power OFF
(Ready to switch on) state, the PDS state changes to Servo ON (Operation enabled). This opera-
tion corresponds to 3: Switch on and 4: Enable operation in the state transition diagram. The
steps 3 and 4 are performed simultaneously.
ā¢ If Enable of the MC_Power (Power Servo) instruction changes to FALSE in the Servo ON (Opera-
tion enabled) state, the PDS state changes to Main Power OFF (Ready to switch on). This opera-
tion corresponds to 5: Disable operation and 6: Shutdown in the state transition diagram. The
steps 5 and 6 are performed simultaneously.
ā¢ For a CPU Unit with unit version 1.09 or earlier, PDS State Control Method is set to 0. For a
CPU Unit with unit version 1.10 or later, PDS State Control Method is selectable.
ā¢ For a CPU Unit with unit version 1.10 or later, PDS State Control Method is set to 0 by
default.
A-5-1 PDS State Control Method
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