Message processing unit of PLC system
AssigneeLsis Co., Ltd.
InventorHwa-Soo Ryu
Life of this patent
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Abstract
Disclosed is a message processing unit provided in a PLC system including a master and a plurality of slaves. The message processing unit is provided to each of the slaves and includes a first filter configured to receive a message transmitted from the master and to determine whether the message is a broadcast message, a second filter configured to receive the message delivered from the first filter and to determine whether the message is a message-to-be-processed, and a processor configured to process the message he delivered from the first filter or the second filter.
Claims8
A message processing unit provided in a Programmable Logic Controller (PLC) system comprising a master and a plurality of slaves, the message processing unit being provided to each of the slaves, the message processing unit comprising:
- a first filter configured to receive a message transmitted from the master and configured to determine whether the message is a broadcast message;
- a second filter configured to receive the message from the first filter when it is determined that the message is not a broadcast message, and configured to determine whether the message is a message-to-be-processed;
- and
- a processor configured to process the message from the first filter when it is determined that the message is a broadcast message or from the second filter when it is determined that message is a message-to-be-processed.
Dependencies are inferred from the claim text.