between s5 c db and s7 opn db - PLCS.net

teh · July 3rd, 2008, 05:53 AM

What is diferent between S5 C DB and S7 OPN DB?

I found that when i convert the program from s5 to s7

the function of OPN DB can only execute in that

particular network and cannot call the other data for following

network.

RMA · July 4th, 2008, 01:37 AM

Quote:

Originally Posted by teh

What is diferent between S5 C DB and S7 OPN DB?

I found that when i convert the program from s5 to s7

the function of OPN DB can only execute in that

particular network and cannot call the other data for following

network.

I can't help with the S5 part, never worked with that, however I'm a bit puzzled by your statement about the OPN DB command. Once you've opened a DB it stays open until another DB is opened, either explicitly, or implicitly, by using a fully qualified address, such as:

L DB1.DBW0

The OPN DB command is not limited by network boudaries.

L D[AR2,P#0.0] · July 4th, 2008, 01:55 AM

Duplicate thread - refer to

http://www.plctalk.net/qanda/showthread.php?t=40258

mohamedzobaa · July 4th, 2008, 07:59 AM

they are similar to each other and it is define the data block no. will deal with it

July 3rd, 2008, 05:53 AM	#1
teh Supporting Member Join Date: Nov 2002 Posts: 133	between s5 c db and s7 opn db What is diferent between S5 C DB and S7 OPN DB? I found that when i convert the program from s5 to s7 the function of OPN DB can only execute in that particular network and cannot call the other data for following network.

July 4th, 2008, 07:59 AM	#4
mohamedzobaa Member Join Date: May 2008 Location: Cairo-Egypt Posts: 73	they are similar to each other and it is define the data block no. will deal with it __________________ Mohamed Faheem Zobaa Electronic Devices Maintenance General Manager (+201005615261) Mohamed_f_zobaa@yahoo.com

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July 4th, 2008, 01:55 AM	#3
L D[AR2,P#0.0] Supporting Member Join Date: Nov 2006 Location: UK Posts: 4,540	Duplicate thread - refer to http://www.plctalk.net/qanda/showthread.php?t=40258

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