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Out value was specified (advanced settings), the channel(s) will not indicate a
communication error.
Increase the sample period for each channel. Too many requests for
information on the Meter Bus can cause communication errors. Additional
devices on the Meter Bus such as meters also increase the number of requests
on the Meter Bus.
Check the voltage of the Relay Driver power terminals. 8V or more is required
for correct operation
Q Can the Relay Driver communicate over the Meter Bus and through the serial
port at the same time?
A Yes. Both methods of communication will work simultaneously.
Q Are the serial port and Meter Bus ports isolated?
A Yes. Both Meter Bus ports and the serial port are opto-isolated.
Each device on the Meter Bus network can have its own battery or power
supply if needed. The isolated serial port requires a small amount of power
from the PC to communicate.
Q What is MODBUS® and where can I learn more about the protocol?
A MODBUS® Protocol is an open standard for communication between
intelligent devices. More information can be found at:
http://www.modbus.org
Q I don't have any more Meter Bus cables. Can I use a regular phone line
instead?
A Yes. Meter Bus cables are standard telephone line cables. Be sure to use at
least 4 conductor cables (count the wires/contacts at a plug)
Q Can the Relay Driver communicate with another Morningstar Device through
the serial port?
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