SMA SUNNY TRIPOWER 60 Technical Information page 16

STP60 SunSpec Modbus Profile – Assignment Tables
Access
Offset of the Modbus register numbers (No.)
For the reading or writing of Modbus registers, use the register numbers reduced by the
offset 1 in each case. Example: Modbus register address = register number in the STP60
SunSpec Modbus profile – offset = 40001 – 1 = 40000.
Reactive power in the SunSpec Modbus profile
For all SunSpec Modbus registers of the Inverter Manager and of the STP60 in which a
reactive power is measured or specified, a positive reactive power is "lagging" and a nega-
tive reactive power is "leading" as per the IEC convention and generator reference-arrow
system.
This information is valid for the following SunSpec Modbus registers: 40354 and 40359.
16 STP60-SunSpec_Modbus-TI-en-12
Access type
RO: Read only
RW: Read and write
If an access type is not allowed, a Modbus exception is generated in
the event of access with an access type that is not allowed.
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