ONICON System-10 N2 - Manual (Page 20)

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System-10-N2 BTU Meter Installation and Operation Guide 05/14 - 0655-5 / 18322
Page 20
Reported Problem Possible Solutions
Network communications are disrupted
when the device is connected. • The RS485 network cable connections are •
polarity sensitive and must be connected •
the same way on every device. (i.e. + to •
+ and - to -). (See section 1.4.1 of this •
manual for details.)
• A unique address is required for each device
on the network. Duplicate addresses will
cause some or all of the devices on the
network to quit working. (See section 1.6.1 of
this manual for details.)
• Shield drain connections should be daisy •
chained in the same manner as the signal
cables for RS485. The shield drain wire
should be left unterminated at the end of
the cable and connected to earth only at the
network master controller. Shield wires must
not be connected to the RS485 connector on
the System-10.