Hello,  guys 

Do you have any tutorial how to connect two PLCs s7-300 CPU 315-2 DP ?

I have tried using xput xget, and PLC doesn't response .. please tell me how ..

thanks.

here is my configuration, on plc 2 i don't configure anything

Hi,

parameter Var_ADDR and SD must be Data Type ANY i.E. P#DB1.DBX0.0 byte 10 or P#A0.0 BYTE 10

Regards,

Towome

Hello,

you can also check RET_VAL value description for problem.

Towome

Hi,

parameter Var_ADDR and SD must be Data Type ANY i.E. P#DB1.DBX0.0 byte 10 or P#A0.0 BYTE 10

Regards,

Towome

 thanks for answering Towome. 
but how to configure P#DB1.DB ? it's show warning when i compile the program that DB it's not found.

Duris_I

Hello,

you can also check RET_VAL value description for problem.

 Thank you Duris_I , I'll read again the description. :)

Hello,

Towome gave you only example in case of use DB block as buffer. You need change your code due your existing situation, using memory location...

Hello,

I've prepared quick test and working perfectly. I've prepared on destination PLC 2 DBs, every with Array of 10 Bytes. Simply one DB as data for 'Master' PLC (which can read this DB with X_GET) and second DB as data changed by 'Master' PLC (with X_PUT). Don't mix informations, look to help in TIA for instructions, destination PLC memory means that DB1 f.ex. so you need set VAR_ADDR like P#DB1.DBX0.0 BYTE 10 and your buffer can be also in local memory like P#M100.0 BYTE 10. Don't worry, it's working ok so make changes in your code, download and via Watch table set both instructions REQ to true. You can also monitor in Watch table needed memory areas for test.

Duris_I

Hello,

I've prepared quick test and working perfectly. I've prepared on destination PLC 2 DBs, every with Array of 10 Bytes. Simply one DB as data for 'Master' PLC (which can read this DB with X_GET) and second DB as data changed by 'Master' PLC (with X_PUT). Don't mix informations, look to help in TIA for instructions, destination PLC memory means that DB1 f.ex. so you need set VAR_ADDR like P#DB1.DBX0.0 BYTE 10 and your buffer can be also in local memory like P#M100.0 BYTE 10. Don't worry, it's working ok so make changes in your code, download and via Watch table set both instructions REQ to true. You can also monitor in Watch table needed memory areas for test.

 that's your configuration on PLC 2 or 1 ? what should i config on othe PLC ? is it same? 

Duris_I

Hello,

I've prepared quick test and working perfectly. I've prepared on destination PLC 2 DBs, every with Array of 10 Bytes. Simply one DB as data for 'Master' PLC (which can read this DB with X_GET) and second DB as data changed by 'Master' PLC (with X_PUT). Don't mix informations, look to help in TIA for instructions, destination PLC memory means that DB1 f.ex. so you need set VAR_ADDR like P#DB1.DBX0.0 BYTE 10 and your buffer can be also in local memory like P#M100.0 BYTE 10. Don't worry, it's working ok so make changes in your code, download and via Watch table set both instructions REQ to true. You can also monitor in Watch table needed memory areas for test.

 Hello duri, thanks for your response. I have did it but i want to make I0.0 on PLC 1 (Left) make output q0.0 on PLC 2 (Right )turn on is it possible ? and can you give me an example for that, please ? 

Hello,

PLC1 has mentioned instructions and PLC2 has two DBs. You don't need set same instructions on PLC2, simply PLC1 read and write to DBs as required.