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To connect addressable devices/detectors to the SPS IDNet using Class A wiring, read the
following instructions.
1. Ferrite beads are required on the SPS IDNet cables (refer Figure 5.1).
2. Route wire from the B+, B- outputs on TB1 of the SPS to the appropriate inputs
on a peripheral IDNet device.
3. Route wire from the first IDNet device to the next one. Repeat for each device.
4. Route wire from the last IDNet device to the A+ and A- inputs on TB1 of the
SPS.
B+ B- SHLD
IDNet
A+
P1
3
2
1
A-
IDNet
DEVICE
IDNet
DEVICE
IDNet
DEVICE
IDNet LOOP
(CLASS A / STYLE G)
Figure 5-9. Class A (loop) Wiring
Continued on next page
SPS IDNet Wiring, Continued
Class A (loop)
Wiring
IDNet
DEVICE
IDNet
DEVICE
IDNet
DEVICE
Ferrite beads
required.