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High speed cpu 315-2DP/DN

Created by: thunder at: 8/2/2011 2:57 AM (3 Replies)

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8/2/2011 2:57 AM	Rate (0)
thunder Posts: 38 Rating: (0)	Hello! i have a CPU 315-2DP/DN 6ES7 315-2EH14-0AB0 and a modul 6ES7 321-1BH10-0AA0 high speed I want use function high-speed counter but i don't know install on HW of PLC. Please help me! Thanks!
thunder Posts: 38 Rating: (0)
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8/2/2011 8:48 AM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	Hello, In hardware configuration is necessary only to assign the address range for this module. Best regards, Hristo Mihalev

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8/3/2011 3:37 AM	Rate (0)
thunder Posts: 38 Rating: (0)	hello! thank you for answers. I want to use the CPU to count a variable frequency 50Hz. you can give me some advice do not?
thunder Posts: 38 Rating: (0)
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8/3/2011 8:24 AM	Rate (0)
Aret Posts: 2348 Rating: (264)	You can do it in theory - 50 Hz signal means you need 100 Hz measurements at least - so your cycle time must be under 10ms. If your cycle is bigger you can set OB35 to required calling cycle time and use SFC "UPDATE_PI". But practically it's not a good approach - i would go for FM350-1/2 or sensor with 4-20ma output.... Well, it's up to you to decide
Aret Posts: 2348 Rating: (264)
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