Hi ALL. I come back with a weird problem
CPU: 1769-L32E CompacLogix
input : 1769-IQ16
output: 1769-OB16
Communication type : ETHERNET
program : RSLOGIX5000
i make a simple program in rslogix, and i donwload it in CPU, i go online , and i switch to RUN mode .
but... when i want to change Toggle bit or force on the input, Does not change, it still 0 and no led show up in addresses
but... the output work correctly
i don't know why . maybe someone can help .
Input does not work in program
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- Posts: 71
- Joined: Wed Nov 18, 2009 4:02 pm
Re: Input does not work in program
Hello,
some questions
- did you measure the voltage on your input channel - 24VDC whan signal is active
- did you take another input channel
- did you connect DCCOM1 and DCCOM2 with - (minus) of your power supply.
Thanks
some questions
- did you measure the voltage on your input channel - 24VDC whan signal is active
- did you take another input channel
- did you connect DCCOM1 and DCCOM2 with - (minus) of your power supply.
Thanks
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- Posts: 12
- Joined: Tue Feb 01, 2022 1:35 pm
Re: Input does not work in program
Hello freindgeorg_demmler wrote: ↑Thu Mar 03, 2022 6:18 amHello,
some questions
- did you measure the voltage on your input channel - 24VDC whan signal is active
- did you take another input channel
- did you connect DCCOM1 and DCCOM2 with - (minus) of your power supply.
Thanks
I connect DCCOM1 and DCCOM2 with (minus) of power supply , and i give the input 24VDC, He worked , the leds turn on and the input in program (RSLOGIX5000) become 1 "green"
but the problem is , when i want to simulate my program in RSLOGIX5000 i always need to give the input 24VDC ?
what i want is to just toggle bit the input and see the input led turn on
because when i toggle bit in input nothing happen in program and the leds don't turn on
REPLY TO YOUR QUESTION :
- did you measure the voltage on your input channel - 24VDC whan signal is active : YES IT's works
- did you take another input channel : NO
- did you connect DCCOM1 and DCCOM2 with - (minus) of your power supply. : YES
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- Posts: 71
- Joined: Wed Nov 18, 2009 4:02 pm
Re: Input does not work in program
Hello,
now I understand - but it's not working.
Look the LED of the input channel need 24V DC power. I think it's not working. LED need power and there is power if the input is active.
Thanks
now I understand - but it's not working.
Look the LED of the input channel need 24V DC power. I think it's not working. LED need power and there is power if the input is active.
Thanks
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- Posts: 85
- Joined: Mon Feb 25, 2008 8:40 am
- Location: Europe
Re: Input does not work in program
If I understood well you want to force input bits and turn on led on input card by that way?Elya97 wrote: ↑Wed Mar 02, 2022 3:22 pmHi ALL. I come back with a weird problem
CPU: 1769-L32E CompacLogix
input : 1769-IQ16
output: 1769-OB16
Communication type : ETHERNET
program : RSLOGIX5000
i make a simple program in rslogix, and i donwload it in CPU, i go online , and i switch to RUN mode .
but... when i want to change Toggle bit or force on the input, Does not change, it still 0 and no led show up in addresses
but... the output work correctly
i don't know why . maybe someone can help .
Can you upload your program somewhere so we can see how did you write that routine?
-
- Posts: 12
- Joined: Tue Feb 01, 2022 1:35 pm
Re: Input does not work in program
hellogeorg_demmler wrote: ↑Fri Mar 04, 2022 4:55 pmHello,
now I understand - but it's not working.
Look the LED of the input channel need 24V DC power. I think it's not working. LED need power and there is power if the input is active.
Thanks
Sorry for late reply
Yes georg, your right input need 24V for activation
thank you.
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- Posts: 12
- Joined: Tue Feb 01, 2022 1:35 pm
Re: Input does not work in program
thank you for your reply . now i understand how it works,h4rdw4re wrote: ↑Tue Mar 08, 2022 9:31 pmIf I understood well you want to force input bits and turn on led on input card by that way?Elya97 wrote: ↑Wed Mar 02, 2022 3:22 pmHi ALL. I come back with a weird problem
CPU: 1769-L32E CompacLogix
input : 1769-IQ16
output: 1769-OB16
Communication type : ETHERNET
program : RSLOGIX5000
i make a simple program in rslogix, and i donwload it in CPU, i go online , and i switch to RUN mode .
but... when i want to change Toggle bit or force on the input, Does not change, it still 0 and no led show up in addresses
but... the output work correctly
i don't know why . maybe someone can help .
Can you upload your program somewhere so we can see how did you write that routine?