Configured for high-availability communication in CENTUM VP/CS DCS platforms, the YOKOGAWA YNT512D-Q12 (YNT512D-Q12 Bus Repeater Module) provides direct physical/electrical execution of redundant Vnet/IP data traffic management.
| Parameter | Specification |
|---|---|
| Model | YNT512D-Q12 |
| Brand | YOKOGAWA |
| Origin | United States |
| Weight | 0.25 kg |
| Dimensions | 25 × 130 × 146 mm |
| Operating Temp | 0 deg C to +55 deg C |
| Power Consumption | 0.8 W (24 V DC) |
| Communication | 100 Mbps Fast Ethernet |
| Ports | 2 × RJ-45 (Redundant) |
| Isolation | Optical/Electrical |
The YNT512D-Q12 operates as a critical node for signal distribution, ensuring deterministic data exchange between controllers, operator stations, and engineering workstations. To maintain process control integrity, the module features dual Ethernet ports supporting hot-standby redundancy, which prevents communication loss during primary link failure. The internal architecture utilizes galvanic and optical isolation between the physical Ethernet ports and the system bus to suppress electromagnetic noise and common-mode transients. Furthermore, the module facilitates FOUNDATION Fieldbus and Profibus PA connectivity protocols within the wider DCS network, while implementing channel-to-channel isolation to prevent fault propagation across the network segment.
Q: Does the YNT512D-Q12 support hot-swapping during network operation?
A: Module replacement must follow the specific DCS cabinet power-down procedures. Verify system configuration status before extraction to prevent network loop errors or communication bus disruptions.
Q: Is this module compatible with non-Yokogawa proprietary network protocols?
A: The module is optimized for Vnet/IP and standard Yokogawa protocols; however, it supports transparent transmission of standard TCP/IP traffic over its 100 Mbps link.
Q: How is the redundant communication path synchronized?
A: The module performs automatic failover to the standby port when a link-layer error is detected, with internal logic managing the seamless transition of the Vnet/IP traffic stream.
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