Skip to Content

Register Login

Industry Online Support

Technical Forum

Navigation

ob31 in step5

Created by: zakariabachiri at: 9/1/2014 4:00 PM (2 Replies)

Rating (0)

Thanks 1

3 Entries

9/1/2014 4:00 PM	Rate (0)
zakariabachiri Posts: 19 Rating: (1)	hello experts i'm doing a migration from s5 to s 7 in the s5 program i have this kind of code that i didn't understand ; ASM KH 0000 BE it's written in the OB31 could you please tel me for what does it mean ? and if i can delete it in the new s7 thank you .
zakariabachiri Posts: 19 Rating: (1)
Suggestion To thank Quote Answer

9/1/2014 4:09 PM	Rate (0)
190B Platinum Member Joined: 2/8/2012 Last visit: 12/22/2014 Posts: 2347 Rating: (384)	You can delete it. OB31 scan time triggering A scan time monitor monitors the program scan time. If program execution takes longer than the specified scan monitoring time (e.g., 500 msec.), the CPU enters the STOP mode CPU goes to STOP with "ZYK" or CPU calls the "Error OB"26 (scan time exceeded) if you have programmed an OB26. Calling OB26 restarts the scan time once. However, the timeout must be acknowledged with an OB31 call otherwise the CPU will go to STOP with ZYK in the event of a repeated timeout even if OB26 is programmed http://support.automation.siemens.com/WW/view/en/1086944
	Last edited by: 190B at: 9/1/2014 4:16 PM
Suggestion To thank Quote Answer

9/1/2014 4:13 PM	Rate (0)
BeVee Gold Member Joined: 7/18/2011 Last visit: 4/13/2023 Posts: 520 Rating: (88)	Hello zakariabachiri OB31 retriggers the cyclus time in S5 programs. The ASM (assembler) instruction is typically for blocks that are build in in the S5 hardware. There is no direct alternative in S7 You won't need this OB in S7 program. If necessary you can select a higher time in hardware settings or you call an error OB in case maximum cyclus time is exceeded. Kind regards, BV

Suggestion To thank Quote Answer
This contribution was helpful to 1 thankful Users YoussefHabiballah

|

Share this page:

Share this page on...

Follow us on