Write a value to a S7 PLC datablock. This function is available via the taskpane as well as directly via the cell “=SETS7DATABLOCK(…)”
The function returns ‘OK’ when the value is successfully written to the datablock. The funtion returns a specific error message if the value could not be written to the S7 PLC, see the error messages for a description of the returned error message.
cpuType – Specifies the cpu type of the PLC you want to connect with, must be a string with the CPU type in following format: ‘S7-1200’, ‘S71200’, ‘1200’.
ip – Specifies the ip address of the PLC.
rackNo – Specifies the rack number of the PLC, must be an integer between 0 and 99.
slotNo – Specifies the slot number of the PLC, must be an integer between 0 and 99.
dbNo – Specifies the datablock number, must be an integer between 0 and 9999.
dataType – Specifies the datatype of the datablock address to write to. The available datatypes depend on the chosen CPU type.
startAddress – Specifies the start address of the requested data, must be an integer between 0 and 9999.
bitNo – Specifies the bit number if the requested datatype is ‘BIT’, must be an integer between 0 and 7.
value – The value that has to be written to the specific datablock address, conditions are depending on the chosen datatype.