Contemporary Control Systems BASgatewayLX - Manual (Page 9)

td100300-0Id
9
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).
leds
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 flashes to show activity.
D glows green for a full-duplex link and is off for a half-duplex link
EIA-485 Tx flashes green when transmitting valid EIA-485 traffic.
Rx flashes green when receiving valid EIA-485 traffic.
reset swItCH
To reset the gateway to its default authentication and IP values (other configuration
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.
CABlInG ConsIderAtIons
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