Description of Holding Registers in Order of Importance
(Memory Table starts at zero, 0)
Register
Address
(Base 10)
Status Item
Description
4
Current
Epoch High
This is the date and time data for the SolarBee. The format is the same as that
of the “Unix epoch”,
(Epoch High * 65536 + Epoch Low), where the value is the
number of seconds since 00:00:00 UTC on January 1, 1970. This value is set
by the GPS hardware in the SolarBee controller.
Querying register 5 and testing the response against the previous value is a
good way to monitor the communication link between the modbus master and
the slave SolarBee controller.
5
Current
Epoch Low
7
System Status
During normal operation this value is 0 (Zero). Any other number indicates
an error. It is important to monitor this register since the SolarBee controller
reports last known values it received from subsystem modules. For example,
if the SolarBee controller loses communication with the motor control module,
it will indicate this in this system status register but continue to report the last
known motor RPM and current values.
9
Visual Status
Indicator
This value gives an indication of the SolarBee controller health blink indicator.
During normal operation the following values will appear:
0 = (1 Blink Green = Healthy System)
32 = (2 Blink Yellow = Low Battery, Healthy System)
1 = (1 Blink Red = AntiJam Sequence), high current may self correct
256 = (1 Blink Green & 1 Blink Yellow = Acquiring GPS Satellite Signal)
Any other indication requires attention:
2 = (2 Blink Red = 36V Out Of Range)
3 = (3 Blink Red = Motor Controller Communication Error)
4 = (4 Blink Red = Charge Controller Communication Error)
5 = (5 Blink Red = Low Battery Limit)
16 = (1 Blink Yellow = High Motor Current)
48 = (3 Blink Yellow = Temperature Out Of Range)
64 = (4 Blink Yellow = 5V Out Of Range)
80 = (5 Blink Yellow = GPS Communication Error)
10
Motor Speed
The unit for this value is RPM in hundredths. To obtain RPM, divide the value
by 100.
11
Motor Direction The value of 0 indicates that the motor will be stopped, the value of 1
represents movement in the forward direction, whereas the value of 3 indicates
reverse movement. Viewed from behind or above the motor clockwise motion
is “forward”.
12
Motor Current
The unit for this value is milliamps.
13
Battery Voltage The unit for this value is Volts. The value is scaled using this formula: value /
10.
14
Input Current
The current that is input to the controller via the solar array or shore power
connections. The unit for this value is Amps. The value is scaled using this
formula: value / 10.
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Technical Data Sheet
SolarBee Standard SCADA Output
803_10196_20220110
O&M_SB5000PW_10272_20220119 - 59
