| 摘要 |
<p>PURPOSE:To make control possible even in case of cable disconnection by connecting a common bus by a closed loop. CONSTITUTION:If all lines are connected through all units, the system becomes operatable when the EPO contact of supervisory unit SUP is closed, and relay RL3 is operated in power source control circuit CON in each unit. When central processing units C1 and C2 are remote, relay RL2 is operated; and when the ON switch of SUP is connected, relay RL1 is operated to supply power to each unit. When they are local, relay RL1 is operated by closing the ON switch independently of SUP and self-holds after that.</p> |
