User's Manual

Table Of Contents
Sunny Beam Manual Operation
29
Diagnostics
The Diagnostics screen provides information on the communication performance of the Sunny
Beam and can be very helpful in troublshooting communication issues. When this screen is
entered, the Sunny Beam begins transmitting requests for data to the Sunny Boy(s). The Sunny
Beam records the successes and failures of these communication requests as described below.
Figure 1-25 Diagnostics Screen
Firmware SBeam: Displays the current version of the firmware installed in the Sunny Beam.
1.PB, 2.PB, 3.PB, 4.PB: Shows the firmware version for each of the installed piggy-back cards.
Device: Shows the last 5 digits of the Sunny Boy serial number for unit identification.
S, LS, LR: Displays the number of information packets being transmitted and received for
analysis.
S: Displays the number of requests for data being sent by the Sunny Beam to the Sunny Boy.
LS: Displays the number of requests sent by the Sunny Beam to the Sunny Boy that the Sunny
boy did not receive. In other words, the Sunny Boy can not “hear” the Sunny Beam. The Sunny
Beam may be too far away from the inverter. Ideally, this number should remain at zero.
LR: Displays the number of requests that were confirmed by the Sunny Boy but weren’t received
by the Sunny Beam. In other words, the Sunny Beam is having difficulty “hearing” the Sunny
Boy and may be too far from the inverters. Ideally, this number should remain at zero.
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