SIMATIC S5 / STEP 5

Synchronisation between 928B CPU and CP5431

Thread Starter: KG*   Started: 6/7/2012 2:26 PM   Replies: 2

  6/7/2012, 2:26 PM

KG* Joined 12/20/2011 Last visit: 5/22/2013 Posts: 13 Rating:  (0)

(0)  Dear all, My basic requirement is that i want to synchronise CPU 928B and CP5431(6GK1543-1AA01). I have the basic things like, I have written a program where i have called FB126 (send all) and FB127 (receive all) in OB1. I have called FB125 (SYNCHRON) block in OB20, OB21, OB22 and assigned proper parameters to it, i.e. I have set SSNR = 0 and the base SSNR set in CP5431 is also 0. The same CPU program is working fine with CP1430 and i have established communication between S5 CPU and WinCC over ethernet.For both communications(CP1430, CP5431) the CPU goes in run state. And I dont think there is any problem in CPU program. But i am facing problem in CP5431. Coming to CP5431, i am using the COM5431E package for programming the CP. I have referred the "FDL connection over PROFIBUS between PC station and SIMATIC S5" and programmed the CP accordingly. But when i put the CP from stop to start, the STOP LED is lit continuously while the green LED lits up only for a few seconds, after that only the STOP LED glows. After this i am not able to access the CP. When i ask for CP status i get an error as "CP interface not ready". Please can any one help me sort out this problem. Thanking in advance.

Top

  6/7/2012, 4:16 PM

BeVee Joined 7/18/2011 Last visit: 5/24/2013 Posts: 278 Rating:  (31)	(0)  Hi KG* What is the SSNR of CP1430 card ? If it is also set to zero, you'll have to choose another (free) one for your CP5431 card. Did you checked if your CP is inserted in a slot that is suited for this CP card ? Kind regards, BV
	Top

  6/8/2012, 6:03 AM

KG* Joined 12/20/2011 Last visit: 5/22/2013 Posts: 13 Rating:  (0)	(0)  Hello BeVee, The communication with WinCC using CP1430 card was done seperately. After this I removed the CP1430 card and used the same CPU program for CP5431. The SSNR in CPU program was kept as 0 while the Base SSNR in CP program was also 0. And the slot where i have inserted the CP5431 card is for CP. I tried on other CP slots as well but no success.
	Top