The Yokogawa VI702, also cataloged as the VI702 Vnet/IP Interface Card, operates as a dedicated hardware component for deterministic Ethernet communication within CENTUM VP control networks.
Hardware Specifications
Parameter
Specification
Model
VI702
Brand
Yokogawa
Origin
Japan
Weight
0.18 Kg
Dimensions
Not specified
Operating Temp
Not specified
Power Consumption
Max. 2.5 A at 3.3 V ± 9 %
Product Type
Vnet/IP Interface Card
Replacement For
V1701 Vnet/IP Interface Card
Indicators
RDY lamp (diagnostic normal), RCV lamp (bus signal detected), SND lamp (bus signal transmitted)
Ethernet Connector
CAT5e cable interface
4-20 mA HART Loop Protocol
The VI702 integrates seamlessly with Yokogawa’s distributed control architecture, supporting deterministic Ethernet communication. While primarily designed for Vnet/IP, the card maintains compatibility with instrumentation networks utilizing 4-20 mA HART loop protocol, ensuring channel-to-channel isolation and stable signal transmission across redundant paths.
Frequently Asked Questions (FAQ)
Q: Does the VI702 card support hot-swap installation? A: No, the card requires system power-down before insertion or removal to avoid backplane bus disruption.
Q: What is the function of the RDY lamp? A: The RDY lamp illuminates when the card completes internal diagnostics and is operational.
Q: How does redundancy switching occur in dual-path configurations? A: Redundancy switching is handled by the Vnet/IP protocol stack, with negligible delay under normal conditions.
Field Installation Guidelines
Insert the VI702 into the designated FCU slot with firm mechanical engagement.
Connect CAT5e cabling with proper shielding; maintain single-point grounding to prevent ground loops.
Separate Ethernet cabling from high-voltage wiring to minimize electromagnetic interference.
Verify indicator lamps during commissioning to confirm bus activity and card readiness.
Ensure redundant paths are validated during system integration testing.
