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SFB47 does not activate the status

Created by: Andre256 at: 9/1/2015 9:13 AM (3 Replies)

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9/1/2015 9:13 AM	Rate (0)
Andre256 Posts: 2 Rating: (0)	Hi Gentlemans, I have readed your conversation. I have created a simple program with SFB47, but the SFB47 is not active. Please, could you help me? See the screens in the attachment. In HW-Konfig: CPU 314C-2 DP, All addresses default, Counter options completed. Program in OB1: Call SFB47, DB47. In PLC-Simulation: E124.2 = TRUE (HW GATE simulated) In VAT-Table: SW_GATE = TRUE (SW GATE forced) But the SFB does not activate the status: STS_GATE (=FALSE)... and the SFB don't count the pulses on E124.0. I have readed a manual 'CPU31xC Technological Functions Operating Instructions' but I really don't know why the SFB47 don't response!!!??? Only one status is active: JOB_DONE. Nothing else. Please, can you give me an advice? Thank you very much. Andre ------------------------------------------------------------------------------------------ Split from High Speed Counter with Incremental Encoder. Attachment sfb47_not_active.jpg (316 Downloads)
Andre256 Posts: 2 Rating: (0)	Last edited by: Min_Moderator at: 9/1/2015 1:59:41 PM New subject after splitting
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9/2/2015 9:00 AM	Rate (1)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 2/21/2023 Posts: 6794 Rating: (1340)	Dear User, You test SFB47 in S7-PLCSIM and before that you should know that all function of a real automation system is not supported by simulating modules.Read more here: What is the difference between S7-PLCSIM and a "real" automation system? System function blocks (SFBs): SFB0, SFB1, SFB2, SFB3, SFB4, SFB5, SFB8, SFB9, SFB12, SFB13, SFB14, SFB15, SFB19, SFB20, SFB22, SFB23, SFB31, SFB32, SFB33, SFB34, SFB35, SFB36, SFB37, SFB52, SFB53 and SFB54 I hope this helps, hdhosseini
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9/2/2015 9:45 AM	Rate (0)
Andre256 Posts: 2 Rating: (0)	Good Morning, thank you for your answer !!! You are right, SFB47 is not on the list of supported blocks. That is a new information for me. I have been really frustrated Thanks and have a nice day. Andre
Andre256 Posts: 2 Rating: (0)
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9/2/2015 9:59 AM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 2/21/2023 Posts: 6794 Rating: (1340)	Good Morning, thank you for your answer !!! You are right, SFB47 is not on the list of supported blocks. That is a new information for me. I have been really frustrated. Good Morning to you , The worst case is also even all supported functions never produce functionality/behavior you want like SFC14/15.Despite the normal returning value, but they never works as expected.For most of the case, I suggest using actual hardware because responses would be different between simulated/actual cases.
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