Abstract
As an important human-machine interaction component in the ship damage control system, the analog display board has a large number of indicator lights arranged on the board. But meanwhile, the indicator lights are in different working states and need to be controlled by multiple driving circuit boards. Thus, the application of RS485 bus communication can effectively solve the problem of communication between the controller side and multiple driving circuit boards. And the multiplexing of output ports on each driving circuit board will be regarded as a pragmatic approach to solve the numerous indicator lights that are in different working states on the board.
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