PLC system providing a web based service
First Claim
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1. A programmable logic controller (PLC) system comprising:
- a first storage unit storing a user program;
a main control unit performing a scan operation based on the user program, measuring a scan time required for the scan operation, and transmitting the measured scan time and service data if a web based service request is received; and
a web based service control unit receiving the measured scan time and the service data, determining a priority of the service data, and processing the service data based on the scan time and the priority,wherein the web based service control unit determines an amount of data processed according to the scan time and processes the service data based on the scan time and the determined amount of data processed.
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Abstract
A programmable logic controller (PLC) system is provided. The programmable logic controller (PLC) system includes a storage unit storing a user program; a main control unit performing a scan operation based on the user program, measuring a scan time required for the scan time, and determining whether there is a need to process a web based service; and a web based service control unit processing the service data based on the scan time service request details, and service data that are transmitted from the main control unit, according to a result of the determination on whether there is a need to process the web based service.
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Citations
11 Claims
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1. A programmable logic controller (PLC) system comprising:
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a first storage unit storing a user program; a main control unit performing a scan operation based on the user program, measuring a scan time required for the scan operation, and transmitting the measured scan time and service data if a web based service request is received; and a web based service control unit receiving the measured scan time and the service data, determining a priority of the service data, and processing the service data based on the scan time and the priority, wherein the web based service control unit determines an amount of data processed according to the scan time and processes the service data based on the scan time and the determined amount of data processed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification