The SolarBee digital controller comes standard with the following
SCADA output capabilities: Controller shall have RS-232 serial
communication (Modbus RTU), DB9 male connection point.
Parameters available for monitoring:
1)
System Status (OK or Fault)
2)
Visual Status Indicator
3)
Motor RPM & Direction
4)
Motor Current
5)
Battery Voltage
6)
Input Charge Current
SCADA Accessory Packages:
• Wireless Radio
• Analog Output
• Laptop Monitoring
• RS-232 to RS-485 Converter
• LED RPM Indicator
SolarBee Monitoring Setup Information
The SolarBee is a modbus RTU slave device with a factory programmable slave ID. The ID can be changed in
the field with a properly programmed SD card. Contact SolarBee customer service for assistance.
Serial Interface
Type: RS-232
Connector: 9 pin male D-Sub
Pin assignments:
1 n/c
2 RXD
Receive Data Input
3 TXD
Transmit Data Output
4 n/c
5 Signal Ground
6 n/c
7 n/c
8 n/c
9 +12VDC, 1 Amp max
(Can be used to power some serial devices)
Serial/modbus Communication Parameters
Rate: 19200 Baud
Bits/byte: 8
Stop bits: 1
Parity: N (none)
Handshake: None
Time between bytes sent to SolarBee controller:
No greater than 20 milliseconds
Time between commands sent to SolarBee controller:
At least 50 milliseconds
Read Holding Register
The SolarBee supports modbus Function 3 - Read Holding Register.
A properly formatted “Read Holding Register” modbus message will be replied to with holding register data.
The “Read Holding Register” message consists of the SolarBee slave address, the function (3), two bytes of
register address, two bytes of number of points, and the CRC. The address of the holding registers can be
found in the table on the next page.
The format of the reply consists of the SolarBee slave address, the function (3), a byte count (number of data
bytes), two bytes of data for each of the requested points, and the CRC.
When monitoring several SolarBees on the same modbus network, query them sequentially. That is, query one
SolarBee and wait for its response, query the next SolarBee and wait for its response, etc. Querying the SolarBees
in a manner such that the query/response messages can overlap or collide will cause inconsistent communication.
© 2020 Ixom | www.medoraco.com | 866 - 437 - 8076 | [email protected]
Technical Data Sheet
SolarBee Standard SCADA Output
803_10196_20201012
O&M_SB500PWc_10316_20210309a - 45
