基本細節(jié):

8405-020 主機通信的指令 提供用于主機通信的冗余網(wǎng)絡

8405-020來自主機通信的指令。C70R CPU 上提供了用于主機通信的冗余網(wǎng)絡。兩個網(wǎng)絡端口在 Leadcontroller 上都處于持續(xù)活動狀態(tài)。預留 CPU 上的網(wǎng)絡端口不可用于外部通信支持冗余以太網(wǎng)通信，并自動傳輸通信。否則，C70R 網(wǎng)絡端口可以在非冗余模式下使用，其中只有一個使用通信端口。
可配置模塊在輸入配置方面具有高度的多功能性，可滿足各種測量要求。該模塊可以完全配置為 4-20 mA 模擬輸入，使用戶能夠靈活地選擇最適合其特定應用的輸入類型。
在 34 個可用通道中，前 24 個通道可單獨配置為 4-20 mA 輸入或熱電偶輸入。這種多功能性使用戶能夠使模塊適應各種監(jiān)控場景。例如，他們可以選擇將輸入用于一般模擬測量，或者在需要精確溫度測量時選擇熱電偶輸入。
同樣，最后10個通道可以配置為-20 mA輸入或RTD輸入。此功能使用戶能夠使用具有高精度和穩(wěn)定性的RTD測量溫度，或?qū)⑤斎胗糜谄渌愋偷哪M信號。
為確保與中央處理器 （CPU） 板的可靠連接和通信，可配置 34 通道 HDVIM 模塊利用 VME 總線接口。這種廣泛使用的接口標準允許模塊和 CPU 板之間無縫數(shù)據(jù)交換，從而能夠順利集成到整個控制系統(tǒng)中。
該模塊的設計具有隔離功能，可提高其安全性和可靠性。前 12 個熱電偶/4-20 mA 輸入被隔離為一組，這意味著它們與其他輸入和控制公共端電氣隔離。這種隔離可防止輸入組之間的任何潛在干擾或串擾，確保為關鍵溫度測量采集準確、無噪聲的數(shù)據(jù)。

8405-020

8405-020 Instructions from host communication. A redundant network for host communication is provided on the C70R CPU. Both network ports are continuously active on Leadcontroller. The network port on the reserved CPU cannot be used for external communication. Redundant Ethernet communication and automatic transmission communication are supported. Otherwise, the C70R network port can be used in non-redundant mode, only one of which uses the communication port.
Configurable modules offer a high degree of versatility in input configuration to meet a wide range of measurement requirements. The module can be fully configured for 4-20 mA analog inputs, giving users the flexibility to choose the type of input that best suits their specific application.
Of the 34 available channels, the first 24 can be configured individually for 4-20 mA inputs or thermocouple inputs. This versatility enables users to adapt the module to a variety of monitoring scenarios. For example, they can choose to use the input for general analog measurements or thermocouple inputs when precise temperature measurements are required.
Similarly, the last 10 channels can be configured as -20 mA inputs or RTD inputs. This feature enables users to measure temperature using RTDS with high accuracy and stability, or to use the input for other types of analog signals.
To ensure reliable connection and communication with the central processing unit (CPU) board, a 34-channel HDVIM module can be configured using the VME bus interface. This widely used interface standard allows for seamless data exchange between modules and CPU boards, enabling smooth integration into the entire control system.
The module is designed with isolation to improve its safety and reliability. The first 12 thermocouple /4-20 mA inputs are isolated into a group, which means they are electrically isolated from other inputs and control common ends. This isolation prevents any potential interference or crosstalk between input groups, ensuring accurate, noise-free data is collected for critical temperature measurements.

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