Product data

attenuationrequirements,therefore,thefollowingguresaresimplyaguidelineasmanyfactors
will affect them. Remember: In general, the shorter the wiring, the less attenuation and/or timing
problems will occur.
Interface Standard Maximum Distance
RJ-11 MeterBus 30 meters
RS-232 15 meters
RS-485 1.2 kilometers
USB 5 meters
RJ-45 Ethernet 100 meters
Table 4. Standard Cable Interface Max. Distances
Several devices can be used to increase these lengths. Active boosting USB cables, Ethernet
switches and RS-232 line boosters can extend the length of their respective communication lines.
Morningstar Network LED Indicators
Meter Hub LEDs
Status LED LED State
ON (green) OFF
Port B
Power to Hub / correct network
connection
No power to Hub
Ports 1-4
Power to port / correct network
connection
No devices connected to port / device
connected does not supply power /
wiring error or broken network cable
Table 5. Meter Hub LED Indicator(s) States
LED OFF: Refer to Table 2 for a list of devices which will supply power.
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MSC Status LED
Status LED Indication Notes
Off No bus power or reversed polarity Check bus power and polarity
Green Power OK, No data on network Wiring OK, Ready for data
Green / Red Flicker Data on network Network OK
Orange Data Error Power down & try again
Table 6. MSC Status LED Indicator States
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Troubleshooting & Misc.