Hello, I have a machine with an S7 200, I want to take data using profibus, I saw videos that said that you point to the byte 1 and you get the input ports and so on. Someone have a full map of how to point the inside data of the PLC?

I have access to the program of the S7 200 but is read only, so i need the map so I can point them from other PLC.

Hello,

Please have a look at the manual:

S7-200 System Manual

See appendix A.

The data in S7-200 is in the V-memory.

Best regards,

Wizard

I check it, i found a relation with modbus, but not what im looking for.
Im looking for a map that tells me something like:

v1 - v4 inputs

v5 - v10 Outputs

v11-v20 Analog input

v21-v30 Analog output

I cant modify the program, so i want to add a Profibus master that point and extract the informacion directly.

Hello,

Perhaps you can use the function X_PUT and X_GET, to communicate with S7-200?

(See online help of Step 7, for more information)

Best regards,

Wizard

MarianoB94

With the profibus block I can point the data, what i need is the map that tells me what im pointing at

 I guess you are using DP_RD and DP_WR blocks. Then you are reading from V-memory.

When you use X_Put and X_Get, you can declare you want to read Inputs, write Outputs etc.

Best regards,

Wizard