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OwnerDavid Elliott, Yu Zhang +4inventors
InventorsDavid Elliott, Yu Zhang, Darrell Halterman, Li Xu, Weihua Shang, Haifeng Wang
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A communication method for use by an input/output (I/O) scanner coupled to a programmable logic controller (PLC) includes coupling at least one I/O module to a backplane, and coupling a maintenance module to the backplane. The communication method also includes selectively enabling and disabling communication between the backplane and the at least one I/O module by actuating a switch in the maintenance module such that network communication is maintained by a network interface regardless of whether communication between the backplane and the at least one I/O module is enabled.
A communication method for use by an input/output (I/O) scanner coupled to at least one programmable logic controller (PLC), said communication method comprising:
An input/output (I/O) scanner comprising:
An input/output (I/O) scanner for use with a programmable logic controller (PLC) network, said I/O scanner comprising:
Dependencies are inferred from the claim text.