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Modicon Multi-Axis Motion SERCOS Network Configuration
Overview The 17S drive is typically configured in a SERCOS network containing many axe s.
A Schneider multi–axis motion controller configured with a SERCOS processor
board transmits motion instructions to all the 17S drives that are properly
configured in the fiber–optic loop.
Which Motion
Controllers run
a SERCOS
Network
The controller that runs a network of many SERCOS axes is a Modicon Quantum
Automation Series SERCOS multi–axis motion controller (part number
141MMS42501) or TSX Premium CSY motion controller. Each controller supports
one independent SERCOS network ring. Each ring can contain up to 8 axes (8
drives and their motors). The 17S may also be configured with a compatible non–
Modicon SERCOS controller. Schneider also offers a 32-axis motion controller
(part number 141MMS53502).
SERCOS Fiber-
Optic Transmit
and Receive
Connectors
Each 17S drive has two SERCOS–compliant SMA type fiber–optic connectors:
lTX (transmit)
lRX (receive)
Through a SERCOS–compliant, fiber–optic cable, the RX connector receives the
controller’s command instructions (as well as

actual motion information from the
previous axes) from the previous drive in the ring. Likewise, the TX connector
transmits the controller’s command instructions (along with actual motion
information from the axes) to the next drive in the ring. The SERCOS multi–axis
motion controller also has a fiber–optic transmitter (TX) connector and a fiber–optic
receiver (RX) connector. The transmitter sends command instructions
(

commanded motion

) to all the 17S axes in the network ring. The receiver accepts
real feedback (

actual motion information

) from all the axes in the ring.
Transmission flows in one direction, with typical cycle times of 2ms to 4ms,
depending on the number or drives, volume of data, and data rate.
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