Technical Functional Summary
The VC401-11 is a V Net bus coupling module used in the Yokogawa CENTUM control system. It provides physical-layer signal coupling between control stations and V Net communication cables, ensuring high-speed, low-latency data transmission with proper impedance matching for signal integrity.
The module is engineered for industrial process control environments and helps minimize signal reflection and transmission loss across long-distance bus wiring, ensuring reliable real-time communication of process variables and control commands.
Detailed Engineering Specifications
| Parameter | Specification |
|---|---|
| Module Type | V Net Bus Coupler |
| Bus Compatibility | CENTUM V Net (Coaxial / Specialized bus) |
| Model | VC401-11 |
| Dimensions | 6.5 cm × 14.1 cm × 13 cm |
| Weight | 0.56 kg |
| Signal Coupling | Low attenuation long-distance transmission |
| Cooling Method | Passive cooling |
| Mounting | CENTUM system backplane compatible |
Integration and Maintenance Context
The VC401-11 is typically installed in Field Control Station (FCS) communication sections. Its main function is to suppress signal reflections and maintain proper electrical characteristics of the V Net bus.
As a largely passive physical-layer device, it requires minimal maintenance but is essential for maintaining overall DCS network reliability.
Technical FAQ
Is VC401-11 compatible with Vnet/IP?
No. It is designed for traditional V Net coaxial bus systems. Vnet/IP networks require Ethernet-based interface modules such as AVR-series hardware.
Does it require software configuration?
No. The module operates at the physical communication layer and only needs hardware-level recognition in the system configuration.
What does the -11 suffix mean?
It indicates a specific hardware revision. When replacing modules, matching the same suffix is recommended to maintain electrical and communication stability.
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