Emerson E2 User Manual
Page 250
F-2
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E2 RX/BX/CX I&O Manual
Echelon Network Problems
Faulty wiring.
Check connections. Are wires
broken or loose? Check network
polarity (positive to positive/
negative to negative). Check for
wire damage.
Termination jumpers are set
incorrectly.
Check for proper setting of ter-
minating resistance jumpers.
Network segment should be ter-
minated on the two endpoints of
the daisy chain and unterminated
everywhere else. Refer to Sec-
tion 8.4, Device Termination.
Subnet (unit #) is set incorrectly.
Each controller must have its
own subnet address. Refer to
Section 8.3, Echelon Network
Structuring (Daisy-Chains).
SYMPTOM
POSSIBLE PROBLEM
SOLUTION