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HSC won't reset (= doesn't take NEW_CV on CV pulse)

Created by: JonBon at: 5/1/2012 1:00 PM (5 Replies)

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5/1/2012 1:00 PM	Rate (0)
JonBon Posts: 2 Rating: (0)	Hi, I'm using the HSC 1 (Inputs: 0.0 and 0.1) to count pulses from an encoder (this works). The problem: I can't reset the counter. I use the CTRL_HSC -block with: - a pulse on 'CV' - a DInt-value (=0), from a Datablock, at 'NEW_CV' - I have put a 1 at 'EN' too (but this shouldn't be necessary) Extra information: PLC S7-1200 CPU 1214C (firmware v1.0) TIA Portal v10.5 SP2 Settings of the HSC: Counting ; AB Quadrature 1X ; Initial counter/reference value = 0. I can't use the external reset, because I need that input for another counter (which I can't reset either) Is there something I'm missing? Thank you for your help.
JonBon Posts: 2 Rating: (0)
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5/1/2012 1:45 PM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 9/10/2025 Posts: 4416 Rating: (1485)	JonBon Hi, I'm using the HSC 1 (Inputs: 0.0 and 0.1) to count pulses from an encoder (this works). The problem: I can't reset the counter. I use the CTRL_HSC -block with: - a pulse on 'CV' - a DInt-value (=0), from a Datablock, at 'NEW_CV' - I have put a 1 at 'EN' too (but this shouldn't be necessary) Extra information: PLC S7-1200 CPU 1214C (firmware v1.0) TIA Portal v10.5 SP2 Settings of the HSC: Counting ; AB Quadrature 1X ; Initial counter/reference value = 0. I can't use the external reset, because I need that input for another counter (which I can't reset either) Is there something I'm missing? Thank you for your help. Hi, I don't have the software/documentation now to write with 100% of sure, but here is my suggestion: you need to give the right HSC name, set the new value (0) and give a pulse in the trigger signtal. Else, you need to save the STATUS variable when ERROR=1. tell us what hapens. It should be enougth. if not, try
	Denilson Pegaia Siemens Industry Sector Technical Support
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5/1/2012 8:14 PM	Rate (0)
Gorp Posts: 89 Rating: (16)	JonBon Hi, I use the CTRL_HSC -block with: - a pulse on 'CV' - a DInt-value (=0), from a Datablock, at 'NEW_CV' - I have put a 1 at 'EN' too (but this shouldn't be necessary) Is there something I'm missing? Thank you for your help. You should not put a pulse on 'CV'of your CTRL_HSC. You should put the CTRL_HSC in a separate FC or FB. Then use a pulseto call the FC or FB that includes the CTRL_HSC. Just call the FC or FB with the parameters that you want to change and always enable the CTRL_HSC in this FC or FB by directly connecting it to left line without any contact.
Gorp Posts: 89 Rating: (16)	Last edited by: Gorp at: 5/1/2012 8:31 PM correction of the text
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5/2/2012 3:29 PM	Rate (0)
Gabriel de Oliveira Bronze Member Joined: 2/16/2011 Last visit: 4/28/2025 Posts: 229 Rating: (28)	Hello, See this post /tf/WW/en/Posts/72683 There is an sample there... Regards
	Gabriel de Oliveira It Works? Rate It.
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5/6/2012 1:04 PM	Rate (0)
JonBon Posts: 2 Rating: (0)	Hi, The problem was indeed adding the right HSC-name to the CTRL_HSC. I had given the CTRL_HSC-block te same name as my HSC (-> not necessary). But I had to add the right HSC-name to the HSC-input of that block. -> problem solved Thank you all for your fast help.
JonBon Posts: 2 Rating: (0)
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5/8/2012 1:55 PM	Rate (0)
PLC_GURU Posts: 13 Rating: (0)	When i test this, the new value loads after one counting pulse!!
PLC_GURU Posts: 13 Rating: (0)
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