Hi all!

My system has a CPU 314C-2 Ptp connected to a PC via PtP Communication.

In the PLC program, there is a command line that is UC "SEND_PTP" (it means that there is no parameter is transferred). 

So I want to know which data is transferred after the command UC "SEND_PTP" is executed. Similarly, which data is received after the command "RECEIVE_PTP" is executed.

Thanks all! 

U_2a0e30a7-a601-4398-afa5-a0e8c952ed68

Hi all!

My system has a CPU 314C-2 Ptp connected to a PC via PtP Communication.

In the PLC program, there is a command line that is UC "SEND_PTP" (it means that there is no parameter is transferred). 

So I want to know which data is transferred after the command UC "SEND_PTP" is executed. Similarly, which data is received after the command "RECEIVE_PTP" is executed.

Thanks all! 

Hello U_2a0e30a7-a601-4398-afa5-a0e8c952ed68,

SEND_PTP and RCV_PTP are the system function blocks (SFB60 and SFB61). UC is used to call FC and SFC. In your case you need to CALL your blocks with corresponding DBs.

@rturas

 

U_2a0e30a7-a601-4398-afa5-a0e8c952ed68

Hi all!

My system has a CPU 314C-2 Ptp connected to a PC via PtP Communication.

In the PLC program, there is a command line that is UC "SEND_PTP" (it means that there is no parameter is transferred). 

So I want to know which data is transferred after the command UC "SEND_PTP" is executed. Similarly, which data is received after the command "RECEIVE_PTP" is executed.

Thanks all! 

 

Hello U_2a0e30a7-a601-4398-afa5-a0e8c952ed68,

SEND_PTP and RCV_PTP are the system function blocks (SFB60 and SFB61). UC is used to call FC and SFC. In your case you need to CALL your blocks with corresponding DBs.

 Thank you for your reply @rturas

, here is a piece of code programming. There is no corresponding DB. So I wonder where the data received is stored.

@rturas I have opened the DB111. I still don't understand where the received data is stored. Maybe it's related to this code:

Please help me clear this problem. Thank you

hiep29102

@rturas I have opened the DB111. I still don't understand where the received data is stored. Maybe it's related to this code:

L     DW#16#10020001

T     DBD    8

Please help me clear this problem. Thank you

 Hello hiep29102, 

L DW#10020001

T DBD8

L W#16#14

T DBW12

L DW#16#84000000

T DBD14

It is a pointer to your destination.

I am on the phone right now, so it is a bit challenging for me to sort it out for you. I will try it later on.

@rturas Thank you for your very useful support. Finally i understand the idea of the programmer. You helped me a lot with the image attached.

But i still don't understand why the programmer have to make it complicated :D If he call the SFB like you, maybe it is easy to approach.

I guess you have decoded your DB number? :) 

L DW#10020001

T DBD8

L W#16#14

T DBW12

L DW#16#84000000

T DBD14