Johnny T
Member
I'm trying to fault find on a Siemens S5 95U PLC. It has an analogue input and output on the front of the PLC.
The address for the analogue input is IW40 - IW54 inclusive. The analogue output is QW40
The trouble is I can't find QW40 or IW40 addressed anywhere in the software.
I can find reference to FW40 and also some declaration names such as SOLL etc. I'm thinking that they must act like the variable declaration table in Step 7 in that you set up a name but then address the name as you call the block?
You are welcome to download the software here as a zip file.
If you can give me any pointers on where the analogue word comes into the software and where the analogue word is outputted then that would be great.
Thanks for any light you can shed on this.
Cheers
JT
The address for the analogue input is IW40 - IW54 inclusive. The analogue output is QW40
The trouble is I can't find QW40 or IW40 addressed anywhere in the software.
I can find reference to FW40 and also some declaration names such as SOLL etc. I'm thinking that they must act like the variable declaration table in Step 7 in that you set up a name but then address the name as you call the block?
You are welcome to download the software here as a zip file.
If you can give me any pointers on where the analogue word comes into the software and where the analogue word is outputted then that would be great.
Thanks for any light you can shed on this.
Cheers
JT