Telecommunications system for programmable logic controller
AssigneeLsis Co., Ltd.
InventorJae-Il KWON
Life of this patent
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Abstract
A telecommunications system for a programmable logic controller (PLC) includes: a master module comprising a transmitter and a receiver; one or more slave modules configured to receive signals transmitted from the transmitter and transmit signals to the receiver in response to the transmitted signals; a signal conversion module configured to convert the signals transmitted between the master module and the slave modules into digital signals; a control module configured to control the signal conversion module and to determine whether there is an error in the signals transmitted between the master module and the slave modules based on the digital signals; a display module configured to display a result of the determination by the control module.
Claims10
A telecommunications system disposed in a programmable logic controller (PLC), comprising:
- a master module comprising a transmitter and a receiver;
- one or more slave modules configured to receive signals transmitted from the transmitter and transmit signals to the receiver in response to the transmitted signals;
- a signal conversion module configured to convert the signals transmitted between the master module and the slave modules into digital signals;
- and
- a control module configured to control the signal conversion module and to determine whether there is an error in the signals transmitted between the master module and the slave modules based on the digital signals.
A communications method used in a communications system disposed in a programmable logic controller (PLC), comprising:
- selecting a station number of a slave module;
- transmitting data to the selected slave module;
- converting the transmitted data into a signal to determine whether the signal is normal;
- receiving data from the slave module;
- and
- converting the received data into a signal to determine whether the received signal is normal.
Dependencies are inferred from the claim text.