| 摘要 |
PURPOSE:To prevent malfunction by resetting a one-stage preceding register which is shifted by the conveyance of a conveyed body, releaving a register which is two stages before, and shifting a register which is three stages before continuously until a next conveyed body arrives. CONSTITUTION:A conveyed body B is conveyed on a conveyor A as shown by an arrow X. When the conveyed body B passes through photoswitches C, D, and E, the 1st stage of the shift register is set in a state (1), its storage contents are shifted to the 2nd stage in a state (2), and the 1st stage is reset continuously. Then, the 3rd stage of the shift register is stored in a state (3) and the 4th stage is stored in a state (4). The 3rd stage is reset continuously in the state (4) and although the 2nd and the 1st stages are released, their states are held until a next conveyed body reaches the state (1). Two adjacent states among said states are inhibited occurring at the same time, so a chattering state even when occurring to photoswitches is disregarded. |
