| 摘要 |
PURPOSE:To utilize a computer with a small capacity which can store suitable minute addresses on at least two representative levels of each bay of a shelf and calculate the other levels by operation. CONSTITUTION:Storage minute addresses for the upper and lower end levels of a region A or B to which a set working object level belongs are picked up from a memory 25 to be input to an arithmetic circuit 43, so that a minute address setpoint 40 for the working object level is calculated and input to an arithmetic circuit 39. In an arithmetic circuit 27, a rough address setpoint 26 is compared with a rough address present point 24 obtained from a counter 23 to give instructions that a crane should advance or retreat, so that the crane travels toward the set destination. If the rough addresses are coincident, coincidence signals 29, 30 are output, and then a minute address present point 41 and a minute address setpoint 40 output from a counter 34 are compared in the arithmetic circuit 39. If they are coincident, the crane is stopped. |
