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
This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.
