| 摘要 |
In an error checking apparatus for a serial signal transmission system comprising a plurality of nodes in a centralized control system of various devices such as presses, machine tools, constructing machines, ships, airplanes, unattended conveyer systems and unattended warehouses, plural types of error check codes are added to serial transmission data for each node. The node checks the received data for each of the received error check codes, adds error codes indicative of the result of the error check to the respective error check codes and sends them to a downstream node and a main controller.
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