Contemporary-control-systems BASgatewayLX Manuale Utente Scaricare il pdf (Pagina 9)

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Limited Power Sources

The gateway should be powered by a limited power source complying with the

requirements of the National Electric Code (NEC) article 725 or other international codes

(SELV) meeting the same intent of limiting the amount of power of the source. Under

NEC article 725, a Class 2 circuit is that portion of the wiring system between the load side

of a Class 2 power source and the connected equipment. For AC or DC voltages up to

30 volts, the power rating of a Class 2 power source is limited to 100 VA. The transformer

or power supply complying with the Class 2 rating must carry a corresponding listing from

a regulatory agency such as Underwriters Laboratories (UL).

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Power This LED is green if power supplied to the unit is proper.

Ethernet L glows green for a proper 100 Mbps link and yellow for a proper 10

Mbps link. It ashes to show activity.

D glows green for a full-duplex link and is off for a half-duplex link

EIA-485 Tx ashes green when transmitting valid EIA-485 trafc.

Rx ashes green when receiving valid EIA-485 trafc.

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To reset the gateway to its default authentication and IP values (other conguration

settings are unaffected), use a paperclip or similar tool to press the Reset IP button for at

least 3 seconds while the gateway is powered. Then release the reset button and remove

power from the gateway for 3 seconds. Restore power and the unit will now use default

IP values and User ID/Password.

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When attaching cables to the unit, Table 1 should be considered.

Function Signalling &

Data Rate

Minimum Required

Cable

Maximum

Segment Distance

Ethernet 10BASE-T

10 Mbps

Category 3 UTP 100 m (328 ft)

Ethernet 100BASE-TX

100 Mbps

Category 5 UTP 100 m (328 ft)

Modbus 2.4–115.2 kbps Belden

9841, 3106A, 9842 1200 m (3937 ft)

Table 1 — Cabling Considerations

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

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Contemporary-control-systems BASgatewayLX Manuale Utente Pagina 9