Host-Controlled Command Buffering for Lower-Cost Production Communication
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Solution Overview
Problem
Current production systems face increased communication costs due to frequent data transmission between host control devices and control devices in industrial settings, particularly when executing various processes.
Innovation Solution
A production system architecture that includes a host control device with a register memory and transmission circuitry to transmit multiple command data sets to a control device, which stores these data sets in a communication memory and executes processes instructed by the host control device, reducing the need for repeated data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple command data sets are transmitted frequently between host control device and control device, then process execution flexibility is improved, but communication cost increases
Solution Approach 1:
The host control device transmits multiple command data sets in advance to the control device before actual execution is needed. The control device stores these command data sets in its communication memory, making them readily available for immediate execution without requiring repeated communication transactions. This preliminary action reduces communication frequency while maintaining process execution flexibility.
Solution Approach 2:
The control device pre-allocates communication memory to store multiple command data sets received from the host control device. By having this memory prepared in advance and populated with command data sets, the control device can execute processes efficiently without needing to request additional data during execution, thereby reducing communication overhead.
2Productivity
If multiple command data sets are transmitted at once, then communication frequency is reduced, but memory requirements increase
Solution Approach 1:
The control device autonomously manages its own communication memory by receiving multiple command data sets from the host control device and storing them locally. This self-service approach allows the control device to maintain its own command buffer without requiring continuous host intervention, improving communication efficiency while managing memory resources independently.
Data Source
AI summary
A production system includes a control device that controls one or more industrial devices, and a host control device that communicably connects to the control device and controls the control device. The host control device includes a register memory allocated for control of the control device and including a command area, and transmission circuitry that transmits multiple command data sets stored in the command area of the control device to the control device, and the control device includes a communication memory in which the multiple command data sets received from the host control device are stored, and processing circuitry that executes a process instructed by the host control device based on the multiple command data sets stored in the communication memory.