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Ring Operation
Several ADAM-4542+ modules can be cascaded to form a ring connection. With a circumstance that users plan to
use a HMI/SCADA to connect multiple kinds of IO device with ADAM-4542+, users can apply ring architecture
to save lots of cost caused from the number of modules and the length of optical fiber. Following diagrams
demonstrates the Ring application. Ring Operation mode is set by DIP4 of SW3.
Limitation
While applying ring operation, please notice the following limitations.
ƒ It only supports the half duplex.
ƒ Up to 100 ADAM-4542+ can be connected over a distance of 1,500 km.
ƒ Under ring operation, RS-232/422/485 all need to set SW2 for baud rate.
Normal Operation
Startup Manual 3
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