PLC maintenance support device and PLC maintenance support program
AssigneeFanuc Corporation
InventorYutaka Sakai
Life of this patent
Estimating the term…
Abstract
A PLC maintenance support device according to the present invention includes a signal identification tag reader for reading a signal address from a signal identification tag attached to an input and output signal cable of a PLC to identify the signal address of the input and output signal cable, a transmitter for transmitting the signal address identified by the signal identification tag reader to the PLC, a receiver for receiving the on or off state of a signal corresponding to the transmitted signal address from the PLC, and a monitor for displaying the received on or off state of the signal.
Claims9
A PLC (Programmable Logic Controller) maintenance support device comprising:
- a signal identification tag reader for reading a signal address from a signal identification tag attached to an input and output signal cable of a PLC to identify the signal address of the input and output signal cable;
- a transmitter for transmitting the signal address identified by the signal identification tag reader to the PLC;
- a receiver for receiving the on or off state of a signal corresponding to the transmitted signal address from the PLC;
- and
- a monitor for displaying the received on or off state of the signal.
A PLC maintenance support program comprising the steps of:
- reading a signal address from a signal identification tag attached to an input and output signal cable of a PLC to identify the signal address of the input and output signal cable;
- transmitting the identified signal address to the PLC;
- receiving the on or off state of a signal corresponding to the transmitted signal address from the PLC;
- and
- displaying the received on or off state of the signal.
A system, comprising:
- a PLC (Programmable Logic Controller);
- a PLC maintenance support device;
- an input and output signal cable of the PLC;
- and
- a signal identification tag attached to the signal cable,
- wherein the PLC is configured to control a controlled device through the signal cable coupled between the PLC and the controlled device,
- wherein the signal identification tag carries a signal address of the signal cable,
- wherein the PLC maintenance support device comprises:
- a signal identification tag reader configured to read the signal address from the signal identification tag attached to the signal cable to identify the signal address of the signal cable, and
- a first transmitter configured to transmit, to the PLC, the signal address identified by the signal identification tag reader,
- a first receiver, and
- a monitor,
- wherein the PLC comprises:
- a second receiver configured to receive the signal address identified by the signal identification tag reader and transmitted from the first transmitter of the PLC maintenance support device, and
- a second transmitter configured to transmit, to the PLC maintenance support device, an on or off state of a signal corresponding to the signal address received at the second receiver, and
- wherein
- the first receiver of the PLC maintenance support device is configured to receive, from the PLC, the on or off state of the signal corresponding to the signal address, and
- the monitor of the PLC maintenance support device is configured to display (i) the signal address together with (ii) the received on or off state of the signal corresponding to the signal address.
Dependencies are inferred from the claim text.