Node red to S7 1214C communication error

Im trying to connect to a siemens plc for the first time.
Getting this error in Debug.
"Error: PLC error [0x8104]: This service is not implemented on the module or a frame error was reported.
Already have optimized data block unchecked.
writing to a global data block.
And i have permit access with PUT/GET communication enabled.
Still no luck. S7 node out shows its online.
Any other ideas?

Hi @jjw,
I have used yet the S7 node with a 1212C CPU, but I never had an error like this.
Do you have insert the correct PLC Position in the Rack textbox?
Also the Variable Declaration in the Node should be written in a correct format like this:

Address Step7 equivalent JS Data type Description
DB5,X0.1 DB5.DBX0.1 Boolean Bit 1 of byte 0 of DB 5
DB23,B1 or DB23,BYTE1 DB23.DBB1 Number Byte 1 (0-255) of DB 23
DB100,C2 or DB100,CHAR2 DB100.DBB2 String Byte 2 of DB 100 as a Char
DB42,I3 or DB42,INT3 DB42.DBW3 Number Signed 16-bit number at byte 3 of DB 42
DB57,WORD4 DB57.DBW4 Number Unsigned 16-bit number at byte 4 of DB 57
DB13,DI5 or DB13,DINT5 DB13.DBD5 Number Signed 32-bit number at byte 5 of DB 13
DB19,DW6 or DB19,DWORD6 DB19.DBD6 Number Unsigned 32-bit number at byte 6 of DB 19
DB21,R7 or DB21,REAL7 DB21.DBD7 Number Floating point 32-bit number at byte 7 of DB 21
DB2,S7.10* - String String of length 10 starting at byte 7 of DB 2
I1.0 or E1.0 I1.0 or E1.0 Boolean Bit 0 of byte 1 of input area
Q2.1 or A2.1 Q2.1 or A2.1 Boolean Bit 1 of byte 2 of output area
M3.2 QM3.2 Boolean Bit 2 of byte 3 of memory area
IB4 or EB4 IB4 or EB4 Number Byte 4 (0 -255) of input area
QB5 or AB5 QB5 or AB5 Number Byte 5 (0 -255) of output area
MB6 MB6 Number Byte 6 (0 -255) of memory area
IC7 or EC7 IB7 or EB7 String Byte 7 of input area as a Char
QC8 or AC8 QB8 or AB8 String Byte 8 of output area as a Char
MC9 MB9 String Byte 9 of memory area as a Char
II10 or EI10 IW10 or EW10 Number Signed 16-bit number at byte 10 of input area
QI12 or AI12 QW12 or AW12 Number Signed 16-bit number at byte 12 of output area
MI14 MW14 Number Signed 16-bit number at byte 14 of memory area
IW16 or EW16 IW16 or EW16 Number Unsigned 16-bit number at byte 16 of input area
QW18 or AW18 QW18 or AW18 Number Unsigned 16-bit number at byte 18 of output area
MW20 MW20 Number Unsigned 16-bit number at byte 20 of memory area
IDI22 or EDI22 ID22 or ED22 Number Signed 32-bit number at byte 22 of input area
QDI24 or ADI24 QD24 or AD24 Number Signed 32-bit number at byte 24 of output area
MDI26 MD26 Number Signed 32-bit number at byte 26 of memory area
ID28 or ED28 ID28 or ED28 Number Unsigned 32-bit number at byte 28 of input area
QD30 or AD30 QD30 or AD30 Number Unsigned 32-bit number at byte 30 of output area
MD32 MD32 Number Unsigned 32-bit number at byte 32 of memory area
IR34 or ER34 IR34 or ER34 Number Floating point 32-bit number at byte 34 of input area
QR36 or AR36 QR36 or AR36 Number Floating point 32-bit number at byte 36 of output area
MR38 MR38 Number Floating point 32-bit number at byte 38 of memory area
DB1,DT0 - Date** A timestamp in the DATE_AND_TIME format
DB1,DTZ10 - Date** A timestamp in the DATE_AND_TIME format, in UTC
DB2,DTL2 - Date** A timestamp in the DTL format
DB2,DTLZ12 - Date** A timestamp in the DTL format, in UTC

Can you please share your flow?

I actually did get it to work now. Deleted the whole program and hardware in TIA portal,
started over from scratch, following above instruction exactly, and it did work thanks.
Where can i find more info on using S7 1200 with node red?
I wanna use a RTD module to send temp to node red