| 摘要 |
PROBLEM TO BE SOLVED: To put a second member in action without interlocking with the action of a first member, by latching an encoder output from the encoder produced by the action of the first member. SOLUTION: A sequencer output 1a is produced, by starting the sequencer 1 by an external command 1A, when a first member 4 is in action by a drive command 5, or when the first member 4 is in a stationary state. If a control signal 1Aa is inputted furthermore into a latch circuit 3A, the latch circuit 3A latches a latch output 3b2 . In consequence, an encoder output 3a by a pulse train 3b2 is not inputted to supply lines 20, 21, and only the sequencer output 1a is inputted to a step driver 7. And a second member 9 is in an asynchronous state which is irrelevant to the action or inaction of the first member 4, and driven only by the sequencer outpout 1a. Accordingly, signal input conditions of the sequencer output 1a and the encoder output 3a to the step driver 7 can be switched by wired-or by the use of the supply lines 20, 21 without using a switch. |
