Onicon D-100 BACnet Uživatelský manuál stáhnout pdf (Strana 24)

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D-100 Display Module BACnet Installation and Operation Guide 05/14 - 0635-6 / 18341 Page 24

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.)

• Is the transmit LED ashing? The transmit LED will

only ash when the device is responding to a poll.

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.)

• A unique IP address is required for each device on

TCP/IP networks. Duplicate addresses will cause

multiple devices to respond to the same poll. This will

cause some or all of the devices on the network to quit

working. (See section 1.6.2 of this manual for details.)

Network communications are

disrupted when the device is

connected (cont.).

• 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 D-100.

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Onicon D-100 BACnet Uživatelský manuál Strana 24