YOKOGAWA EC402-50
| Brand | YOKOGAWA |
| Module Number | EC402-50 |
| Unit Price | $1500 |
| Country Of Origin | Japan |
| Weight | 0.51KG |
| Certificate |
C/O from the Chamber of Commerce C/Q from the Manufacturer |
| Warranty | 12 Months |
| Inventory Qty | 10 |
The EC402-50 is an ESB bus coupler module in Yokogawa’s CENTUM VP DCS. Its core function is for ESB bus communication between the FCU and I/O node units, with a transmission rate of 128Mbps. It can connect up to 13 nodes, supports dual redundancy, and achieves reliable data exchange through master station scheduling and protocol conversion.
| Parameter categories | Specifications Details |
| Core Functions | The ESB bus master interface connects the FCU and the ESB bus node unit. |
| Communication performance | Transmission rate 128Mbps; maximum length 10m on each side, total length ≤20m |
| Electrical characteristics | Current consumption 0.5A; compatible with FCU power supply |
| Compliance | Compliant with CSA, CE, EAC, RCM and other EMC standards |
Account Number 88800006406771
Account name Vogi International Trading Co., Limited
(* If the account name exceeds the available space, please continue in the address field.)
SWITF/BIC Code WIHBHKHHXXX
Bank name OCBC Hong Kong Branch
Bank address 161 Queen's Road Central, Central, Hong Kong
Country/Region Hong Kong (China)
Account type Business Account
Bank code 035
Payment method For the payment of goods, please make a FPS/CHATS/SWIFT Payment
Notes Please include the following memo/message to receiver when making a payment: [Buyer Name] [Invoice/Contract Number] [Product]
Working principle
Role Definition
As the ESB bus master on the FCU side, it manages the I/O node units on the bus, undertaking media access control, data frame forwarding, and node scheduling.
Data Interaction Flow
Downlink: Receives control commands/configurations from the FCU, encapsulates them into ESB bus frames, and sends them to designated I/O nodes according to the scheduling sequence, ensuring real-time performance and determinism.
Uplink: Collects I/O data/status from each node, verifies it, and summarizes it back to the FCU, supporting batch and burst data transmission.
Protocol Adaptation
Completes the conversion between the FCU's internal bus protocol and the ESB bus protocol, shielding underlying differences and achieving transparent communication.
Redundancy and Reliability
In dual-module redundancy configuration, the primary and backup modules synchronize their status in real time, and switch over in milliseconds during failures, ensuring uninterrupted bus operation; it also features frame verification, error retransmission, and online node diagnostics, improving link robustness.
Node Management: Through address allocation, heartbeat detection, and conflict avoidance mechanisms, manage the access, communication, and offline alarms of up to 13 nodes, adapting to distributed I/O expansion scenarios.
