Is SFC14/15 working with PLCsim ?

 Dear hdhosseini , 

hope you are doing well , I am trying to simulate 2 cpu via prifibus , simple program using SFC14/15 , but there is no data exchange when using PLCsim ! , asking if SFC14/15 working with PLCsim ? or there is something wrong  ?

the project file I used is from this article ..

DP link between CPU 315-2DP (slave) and S7-400 (master) with STEP 7 V5.3

hdhosseini

Dear BerraB

PLCSIM just can simulate the logic and do simple S7 connection
communication between PLCs.Please simplify your project and
limit it to your 2 CPUs andcommunication between them.Finalize
the project while real hardware is available.

Best regards
hdhosseini

------------------------------------------------------------------------------------------
Split from Plcsim DP/DP Coupler.

 Helleo , 

Apprecite your respnse  , , I have another quastion if you dont mind , 
I have to connect s300 cpu  to a dp dp coupler (slave) via profibus , I saw some article that suggest to use sfc14/15 blocks,  I am asking is it also possible to use PUT , GET (I_PUT , I_GET ) blocks in this situation  ? or what is the diffrence in this case ? 

Regards, 

Fahad Saad , LafargeHolcim - Automation Engineer

hdhosseini

Hello,

hope you are doing well , I am trying to simulate 2 cpu via prifibus , simple program using SFC14/15 , but there is no data exchange when using PLCsim ! , asking if SFC14/15 working with PLCsim ? or there is something wrong  ?

PLCSIM can not simulate SFC14/15 over PROFIBUS DP network.You can simulate S7 connection over PROFIBUS with PUT and GET by using PLCSIM. Check the following video.

I hope it helps,

hdhosseini

AutoGen_187118

Please can you tell me why you can't use i_put/i_get or i_send/i_rcv in this situation ? What's the difference between SFC14/SF15 and these "i" fonctions ?

 I_GET/I_PUT are for PLC-PLC communication when the other PLC is defined as an I-Slave or I-Device.

How can you access via PROFIBUS DP another CPU, which is connected to the PROFIBUS DP as a slave, from a DP master using basic communication with SFC72 "I_GET" and SFC73 "I_PUT"?

SFC14/15 (DPRD_DAT/DPWR_DAT) is for reading and writing the data to read/write consistent data from/to an I/O module in the Profibus/Profinet master system.