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encoder conect with plc S7-200 begineer

Created by: JALIL AWAN at: 2/6/2013 7:13 PM (13 Replies)

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2/6/2013 7:13 PM	Rate (0)
JALIL AWAN Regular Member Joined: 2/3/2013 Last visit: 6/12/2025 Posts: 5 Rating: (0)	hi plz anyone help me how i connect a encoder 1000 pulse per rotation with S7-200. i new in automation field plz plz help me thanks full to you.

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2/6/2013 8:17 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 1/2/2026 Posts: 12479 Rating: (2722)	Hello Jalil; What type of encoder are you planning to use? You can use a built-in High-Speed counter (HSC) with an incremental encoder on a S7-200 CPU: (From the S7-200 System Manual: S7-200 System Manual, starting at page 118) Typically, a high-speed counter is used as the drive for a drum timer, where a shaft rotating at a constant speed is fitted with an incremental shaft encoder. The shaft encoder provides a specified number of counts per revolution and a reset pulse that occurs once per revolution Some help and hints from the forum: Encoder reading from S7 - 200 CPU 226 What are S7-200 Programming Tips and where can I obtain them? Download the Tips and Tricks and open Tip #4. Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 2/6/2013 8:18 PM
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This contribution was helpful to 1 thankful Users JALIL AWAN

2/14/2013 9:34 AM	Rate (0)
JALIL AWAN Regular Member Joined: 2/3/2013 Last visit: 6/12/2025 Posts: 5 Rating: (0)	thanks allot of thanks you replay me sir we have a simple encoder 5VDC 1000 pulse per rotation we use this for measuring of pipe length.now i check your link and replay you i hope sir you help me next time.

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2/14/2013 9:50 AM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Sorry you can't use this encoder (directly), you need 24V pulses. With a TTL to HTL converter, i.e. this one you can use this encoder. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 1 thankful Users JALIL AWAN

2/16/2013 10:54 PM	Rate (0)
JALIL AWAN Regular Member Joined: 2/3/2013 Last visit: 6/12/2025 Posts: 5 Rating: (0)	hello marcjan: sorry sir but i see a one encoder channel a+ a- b+ b- connect with siemens plc s7-200 with out any convertor for measuring purpose plz you give me a guidens how we conect this with out any convertor. any method sir me waiting your replay.

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2/17/2013 7:16 AM	Rate (1)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/2/2026 Posts: 10244 Rating: (1183)	Is that CPU 224XP? Because only PLC224XP can "detect" 5V inputs and outputs. Best regards, Hristo Mihalev

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2/17/2013 2:55 PM	Rate (0)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, Umencho is right, i keep forgetting the 224XPthe only 200 with 5V inputs. So if you have that type off CPU, you have : 4 VDC at 8 mA (I0.3 to I0.5) inputs for your encoder. So you can use HSC 4 for this type of encoder (in mode 9 &10) Connect A+ to input 0.3 and B+ to input 0.4 Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/17/2013 3:09 PM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/2/2026 Posts: 10244 Rating: (1183)	HelloMarcjan, Do you think that way will work properly?Let's say continuously without problems in reading? Best regards, Hristo Mihalev

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2/17/2013 3:27 PM	Rate (1)
Marcjan Diamond Member Joined: 4/22/2010 Last visit: 3/31/2025 Posts: 5697 Rating: (716)	Hello, To be hounest, i don''t know. Never use(d) 5 V encoders direct on CPU, it''s working on the edge of the specifications, and therefore possible you lose pulses. I think if the pulses are not that fast it might work. You make me curious, i'll test it this week Have a 224XP somewhere under a big layer of dust. Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/17/2013 3:43 PM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/2/2026 Posts: 10244 Rating: (1183)	Marcjan ...it''s working on the edge of the specifications, and therefore possible you lose pulses. I think if the pulses are not that fast it might work. You make me curious, i'll test it this week Have a 224XP somewhere under a big layer of dust. Regards, Marcjan This is the point. Share with us the results of your trial. Best regards, Hristo Mihalev

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