# IRC5 compact and DSQC-652 - outputs not working **URL:** \ **Category:** IRC5\ **Tags:** dsqc652, irc5-compact\ **Created:** [June 11, 2025, 5:49am UTC](https://tech-community.robotics.abb.com/t/irc5-compact-and-dsqc-652-outputs-not-working/11947 "2025-06-11T05:49:16Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![rg85](https://avatars.discourse-cdn.com/v4/letter/r/9d8465/32.png) [@rg85](https://tech-community.robotics.abb.com/u/rg85)\ **Post date:** [June 11, 2025, 5:49am UTC](https://tech-community.robotics.abb.com/t/irc5-compact-and-dsqc-652-outputs-not-working/11947/1 "2025-06-11T05:49:16Z")
Hello all, Some background: I have purchased a used IRB-140 (year 2015) with IRC5 compact controller. It has the factory installed DSQC-652 (DeviceNet Lean). The connection for the DSQC is brought to the front panel with a D-sub 44 connector “XS7”. I received the wiring diagrams from ABB tech support and everything seems accurate compared to what I have in front of me. The previous application used the Digital Inputs but did not use any of the Digital Outputs. The system came with a jumper preinstalled in the “XS10” connector across pins #2 & 5. Based on the circuit diagram (and verified with multimeter) this connects 0V from the DeviceNet power supply to the Digital Input circuitry (on the DSQC-652 connector “X3”). ![IMG-20250610-100952797-HDR](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/e/eadf9b7dc8f9e13404276be95498708f3234d976.jpeg) All of the Digital In circuits work fine. No problems here. But I cannot get any of the digital outputs to fire. I can look inside to see the status LEDS of the outputs but they do not turn on when I toggle them 0/1 on the teach-pendent. I have the outputs mapped to Digital Output address 0, 1, etc. I have search online extensively for this problem and I see in a few places that I need to apply +24V to XS7 pin #10 and 0V to XS7 pin #9. The problem is that these pins on the D-sub connector do not actually attach to anything internally. Based on the circuit diagram, below, pins 9 and 10 on XS7 are indeed not connected to anything. I have verified that the two wires coming from the X2 connector do trace over to pins #3 and 4 on the XS10 connector. There is, however, not any voltage on these pins. I have tried applying 24V and 0V to these (jump pins #2&3 and pins#1&4 on XS10) but the outputs still do not work. ![DSQC-652-outputs](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/8/81c22daa772d7daa5f4db407e9055d021f16106d.png) Based on the circuit diagram and the user manual, it seems like pins #3 and 4 on XS10 are designed as outputs ready for me to use and there should be voltage present without me having to jump anything on XS10. ![X2-connector](https://europe1.discourse-cdn.com/flex005/uploads/robotics1/original/2X/f/f30c641dffb212b457bc6a52e5fe99407cadb5af.png) Any thoughts what I should try next? It seems strange that the 0v and 24V pins on XS10 (#3 and 4) aren’t providing anything. It is also strange that the status LEDS do not turn on when I toggle the output. Thanks ---
**Author:** ![lemster68](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/lemster68/32/1945_2.png) [@lemster68](https://tech-community.robotics.abb.com/u/lemster68)\ **Post date:** [June 11, 2025, 11:57am UTC](https://tech-community.robotics.abb.com/t/irc5-compact-and-dsqc-652-outputs-not-working/11947/2 "2025-06-11T11:57:13Z")
On the power supply, X4, pin 2 is +24v for devicenet. Pin 4 is 0v devicenet. ---
**Author:** ![rg85](https://avatars.discourse-cdn.com/v4/letter/r/9d8465/32.png) [@rg85](https://tech-community.robotics.abb.com/u/rg85)\ **Post date:** [July 4, 2025, 4:01pm UTC](https://tech-community.robotics.abb.com/t/irc5-compact-and-dsqc-652-outputs-not-working/11947/3 "2025-07-04T16:01:41Z")
> [@lemster68](#): > > On the power supply, X4, pin 2 is +24v for devicenet. Pin 4 is 0v devicenet. Sorry for the slow response. What should I be doing with these pins? Is this the main controller power supply you are talking about or is this a connector on the DSQC 652? ---
**Author:** ![lemster68](https://dub1.discourse-cdn.com/flex005/user_avatar/tech-community.robotics.abb.com/lemster68/32/1945_2.png) [@lemster68](https://tech-community.robotics.abb.com/u/lemster68)\ **Post date:** [July 7, 2025, 11:40am UTC](https://tech-community.robotics.abb.com/t/irc5-compact-and-dsqc-652-outputs-not-working/11947/4 "2025-07-07T11:40:44Z")
You need to take power FROM the power supply TO the IO board.