SMA SUNNY TRIPOWER 60 Technical Information page 49

SMA Solar Technology AG
Modbus exception 3 "Illegal
Data Value" is reported in the
Modbus client.
Modbus exception 4 "Slave
Device Failure" is reported in
the Modbus client.
Other Modbus exceptions
Other errors
Technical Information
You may be trying to write to a data block (Modbus commands
0x10 and 0x17) and one of the values has a data type that is
not permitted.
Corrective measures:
• Read off the data type of the register to be written to from
the "Type" column of the corresponding assignment table
and correct it in the Modbus client.
You may be trying to read or write to a register of a device, but
are using a unit ID that is not permitted.
Corrective measures:
• Set the Unit IDs = 125 to 167 in the Modbus client for the
desired SMA device.
Corrective measures:
• For Modbus exceptions, see "Modbus Application Proto-
col Specification" at http://www.modbus.org/specs.php.
Corrective measures:
• For troubleshooting on the SMA devices, use the error
code shown in the display or LCS tool. To decrypt the
event messages of inverters, you require additional infor-
mation (for event messages, see the inverter installation
manual at www.SMA-Solar.com).
STP60-SunSpec_Modbus-TI-en-12
Troubleshooting
49