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Article | February 18, 2013
Wago Corporation: Fieldbus coupler for harsh environments
Designed for harsh-environment motion control applications that may not have enclosures, Wago’s IP67 SPEEDWAY 767-1311 machine-mount Fieldbus Coupler links the fieldbus level to the Sercos V1.2 real-time Ethernet fieldbus system, supporting all Sercos cycle times, and integrating into a Sercos system via Standardized Sercos Profiles and Device Description (SDDML).
By767-1311 determines station structure upon install, generating the process image for configured I/O — even for mixed (analog, digital and specialty modules) stations. Parameter setting via FDT/DTM (including diagnostics and simulation) simplifies integration. Dual, integrated Ethernet ports create both line and ring topologies without additional components. Supporting Auto MDI/MDI-X, the ports detect transmission direction — patch and crossover cables can be used. 767-1311 carries UL 508.
SPEEDWAY Sercos coupler’s eight high-speed digital inputs capture binary signals from switches and sensors with a 10µs (microseconds) scanning cycle — compatible with 31.25µs Sercos cycles. Because the coupler connects to a wide range of Wago-I/O-system modules, SPEEDWAY can support “hard” real-time applications with I/O cycles of just 250µs. The coupler is extendable up to 64 modules, which can be installed away from the Sercos coupler for system expansion up to 200m. This enables digital and analog I/O modules to be installed directly next to sensors and actuators.
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