FX Series Positioning Controllers Operation, Maintenance and Inspection 8
8-8
Operation command methods
The following methods are available to perform machine zero return.
• ZRN signal entered from an external unit
(The ZRN signal is entered to each of the X and Y axes in the FX
2N
-20GM.)
MANU mode :Always valid
AUTO mode :Valid during m02 (END) standby
• During execution of cod28 (DRVZ) (Refer to Section 5.4 for the FX
2N
-20GM.)
MANU mode: Invalid
AUTO mode: During execution of instruction
• Commands sent from a subtask
Turn ON M9004 (X axis) and M9020 (Y axis) while the subtask is in the AUTO mode.
MANU mode: Invalid
• Commands sent from the programmable controller
Turn ON the buffer memories #20 b4 (X axis) and #21 b4 (Y axis).
MANU mode: Always valid.
AUTO mode: Valid during m02 (END) standby
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