# Deactivate channel of 750-463 module with codesys 3.5

**URL:** <https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091>\
**Category:** CODESYS\
**Tags:** codesys\
**Created:** [July 17, 2024, 12:37pm UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091 "2024-07-17T12:37:21Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![JKimmich](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@JKimmich](https://www.wago.community/u/JKimmich)\
**Post date:** [July 17, 2024, 12:37pm UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091/1 "2024-07-17T12:37:22Z")

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I’m using the basic controller 100 with a lot of 750-463 (4-channel analog input for Pt1000) modules and also one 750-496 (8-channel analog input 4…20 mA).  
I have just noticed that I can deactivate unused channels on the 496 module with  
WagoTypesModule\_75x\_496.eSignalType.CHANNEL\_DISABLED

Is there a way to also disable channels with the 463-module? A similar channel\_disabled parameter is missing there (at least in the docs). You can just change the temperature sensor type.  
It would be great if the red LEDs would go out and the controller would not display an I/O error (unless there is an error) 🙂

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**Author:** ![David](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/david/32/830_2.png) [@David](https://www.wago.community/u/David)\
**Post date:** [July 17, 2024, 3:43pm UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091/2 "2024-07-17T15:43:00Z")

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The 750-463 doesn’t have the channel disable option, but the 750-451 does and it’s 8-channel so it helps you save space as well.

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**Author:** ![quenorha](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/quenorha/32/429_2.png) [@quenorha](https://www.wago.community/u/quenorha)\
**Post date:** [July 18, 2024, 5:29am UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091/3 "2024-07-18T05:29:29Z")

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Please note also that the resistive or temperature probes connected to the 750-463 or 750-464 module are measured sequentially (channel 1, channel 3, channel 2 then channel 4). Thus, channels 1 and 3 as well as channels 2 and 4 form a common measurement circuit. In 4 channel mode, both channels of the measuring circuit must therefore be connected or short-circuited.  
 ![image](https://us1.discourse-cdn.com/flex016/uploads/wago/original/1X/3242084b4c714a12c6865c8e8e0ebc57896069a4.png)

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<div class="post-metadata">

**Author:** ![JKimmich](https://avatars.discourse-cdn.com/v4/letter/j/b9e5f3/32.png) [@JKimmich](https://www.wago.community/u/JKimmich)\
**Post date:** [July 19, 2024, 9:02am UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091/4 "2024-07-19T09:02:27Z")

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Thanks for the answer. I have already taken it into account.  
So I can also just connect the unused channels with a resistor? I assume that if I do so the controller will just output fake numbers but the red LEDs will turn off?

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**Author:** ![quenorha](https://sea2.discourse-cdn.com/flex016/user_avatar/www.wago.community/quenorha/32/429_2.png) [@quenorha](https://www.wago.community/u/quenorha)\
**Post date:** [July 19, 2024, 9:04am UTC](https://www.wago.community/t/deactivate-channel-of-750-463-module-with-codesys-3-5/1091/5 "2024-07-19T09:04:28Z")

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Yes, just use a resistor within the temperature range.  
For instance in PT1000 mode, with a 1k resistor you should see 0°C