Onicon System-10 Dualnet Uživatelský manuál stáhnout pdf (Strana 7)

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System-10 Dual Network Interface Installation Guide 05/14 - 0972-1 Page 7

1.5 NETWORK SIGNAL CONNECTIONS

1.5.1 RS485

Use 18 – 22 twisted shielded cable for RS485, 2-wire (half-duplex) serial

communications. The cable is connected to terminal T1A. Do not exceed 4.4 in-lb (0.5

Nm) of torque when tightening the terminals.

CAUTION

Only qualied service personnel should make connections between the System-10 BTU Meter

and the user’s external equipment. ONICON assumes no responsibility for damage caused to

the external equipment as a result of an improper installation.

Terminal

T1A

G terminal only used

for 3-wire installations.

Do not connect shields

to this terminal.

CAUTION

Incoming and outgoing RS485 cable shield wires should be connected together, but must not be

connected to the Btu meter.

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Onicon System-10 Dualnet Uživatelský manuál Strana 7