Rating 
Thanks 0
| 6/26/2009 9:27 AM | |
|
Posts: 691 Rating:
|
Hello Everyone I got a strange problem in PLC Sim . While going through the logic one Output is ON , but in the PLC Sim its not showing I checked Cross Reference whether it has been used twice , but its written once in one place Please Help me! AttachmentPLCSim.zip (511 Downloads) |
| 6/26/2009 11:08 AM | |
|
Posts: 691 Rating:
|
I have downloaded the I/O Fault OBs then too its happening |
| 6/26/2009 11:13 AM | |
Joined: 3/21/2006 Last visit: 3/30/2025 Posts: 10239 Rating:
|
Hello, Try with memory reset and download project again... Regards Hristo Mihalev |
| 6/26/2009 12:20 PM | |
|
Posts: 691 Rating:
|
I tried that also !!!!!!! Its taking inputs,memory bits but its not displaying the outputs the outputs are used once only |
| 6/26/2009 1:02 PM | |
|
Posts: 293 Rating:
|
Hi, the ENO is not true. Should he not? |
| 6/26/2009 1:30 PM | |
|
Posts: 691 Rating:
|
Hi, the ENO is not true. Should he not? What can be the problem? |
| 6/26/2009 2:10 PM | |
Joined: 10/7/2005 Last visit: 9/4/2025 Posts: 3049 Rating:
|
May I suggest we check the obvious one first, such checking if you are using QB0, QW0etc. somewhere. Tick "Overlapping access to memory areas" in your GO TO location (or check the I/Q/F X-ref). If this is ok, then put"A Q 0.6" as the last statement in OB1 and see if the output is on at the end of the scan. If it is NOT then you'll probably have someindirect addressing going on somewhere that resets it. Last but not least, posting the S7 project would not hurt if none of the above helps. P.S: The ENO of the FB has nothing to do with it. I hope this helps cheers fritz |
Last edited by: fritz at: 6/27/2009 3:08 AMfixed Q address typing mistake Cheers |
|
| 6/26/2009 2:23 PM | |
|
Posts: 691 Rating:
|
Yes It worked Set the Q-bit in the end of OB1 is working fine But I can't find QB0,QD0 or Q0.0 written anywhre |
| 6/26/2009 2:33 PM | |
|
Posts: 293 Rating:
|
Could you explain it, please? |
| 6/26/2009 2:45 PM | |
|
Joined: 10/7/2005 Last visit: 9/4/2025 Posts: 3049 Rating:
|
Hello Rene_10r have a look at this thread concerning ENO and its meaning. Hello Ninja Robot That's good, we are getting somewhere and there is a good chance that indirect addressing is used somewhere after the call of your FB which overwrites the Q 0.6. Owing to the nature of indirect addressing, you won't find this via the X-ref, but you can yourself narrow it down by adding "A Q 0.6"in different places between the call of your FB and the end of OB1 and then check via block status when Q 0.6changes to 0. As mentioned earlier posting your S7 project here won't hurt. cheers fritz |
Last edited by: fritz at: 6/26/2009 2:48 PMCheers |
|
Follow us on