# Safety and I/O interface option missing power supply terminals for DSQC 652 in compact controller

**URL:** <https://tech-community.robotics.abb.com/t/safety-and-i-o-interface-option-missing-power-supply-terminals-for-dsqc-652-in-compact-controller/6384>\
**Category:** Robot Controller\
**Created:** [November 19, 2014, 9:34am UTC](https://tech-community.robotics.abb.com/t/safety-and-i-o-interface-option-missing-power-supply-terminals-for-dsqc-652-in-compact-controller/6384 "2014-11-19T09:34:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![pacijent](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/pacijent/32/512_2.png) [@pacijent](https://tech-community.robotics.abb.com/u/pacijent)\
**Post date:** [November 19, 2014, 9:34am UTC](https://tech-community.robotics.abb.com/t/safety-and-i-o-interface-option-missing-power-supply-terminals-for-dsqc-652-in-compact-controller/6384/1 "2014-11-19T09:34:45Z")

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Hello to all, I was looking for electrical diagrams for compact controllers, I know that we have to bring 24VDC to I/O card in order to make it work. But what in the case that we order safety and I/O interface HW option, I don’t see way to connect 24V to card, is that connection already made if we order this HW option for compact controller. Thanks.