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How do I get I/O or standard M variables

Created by: RvGeffen at: 6/28/2010 1:45 PM (3 Replies)

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6/28/2010 1:45 PM	Rate (0)
RvGeffen Posts: 3 Rating: (1)	Pegaia Hi, I and a college, Mr. Paiva, mount a little sample program that send RS232 ASCII telegrams to a PC with HyperTerminal from a S7-1200. Follow there is the project, a picture with the HyperTerminal adjusts and the looks like in this software.We use the follow RS 232 cable:2-3; 3-2; 4-6; 6-4; 7-8; 8-7; 5-5 Attachment:serial.zip (22 Downloads) Hello Pegaia, I used your RS 232 program and it is working. My question now is, how do I get I/O or standard M variables (for example I want to know I0.0 till I0.7 and Q0.0 till Q0.4 and MB14.0 MB14.1 and DW16) How do I get those variables in the DB? (and can I write the variable back to the PLC to change for example MB14.0 from false to true?) best regards, Rens van Geffen Splitted from Sample program S7-1200 RS 232 ASCII HypterTerminal comunications.
RvGeffen Posts: 3 Rating: (1)	Last edited by: O_Moderator at: 6/29/2010 9:41 AM new subject after splitting
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6/28/2010 4:56 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 12/12/2024 Posts: 4365 Rating: (1457)	Hi, The function of this TIP is just shows how a ASCII works... For practical implementations, you need to mount a user program to read the data and change the conteds of the sent DB in function of this value. For example: if m10.0= true then DB1.DBB0="A" else DB1.DBB0="B"
	Last edited by: Pegaia at: 6/28/2010 4:57 PM Denilson Pegaia Siemens Industry Sector Technical Support
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6/28/2010 6:07 PM	Rate (1)
RvGeffen Posts: 3 Rating: (1)	Thank you for your reaction. Can you explain me how I get more information in a DB. I need to send the DB via RS 232. I rearrange all values in lab view. So how can I put different memorys in a DB and make this DB able to send via RS 232 best regards rens
RvGeffen Posts: 3 Rating: (1)
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6/29/2010 5:37 PM	Rate (1)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 12/12/2024 Posts: 4365 Rating: (1457)	Hi, what user dataa should you place in the DB and how to do it, iscase dependent... You can, for example, create a DB with a array of char (or integer, etc.), and program moves.
	Denilson Pegaia Siemens Industry Sector Technical Support
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