Host Engineering Forum

General Category => General Discussion => Topic started by: georgeyates on August 20, 2019, 06:13:32 AM

Title: CPU not going into run mode
Post by: georgeyates on August 20, 2019, 06:13:32 AM

Powered up a machine the other day that uses a 340 CPU. CPU did not go into run mode. Tried to go online with it and I could not connect. Got called away to another machine and when I got back run light was on and I could connect.

Power light on CPU was on the whole time. Also this is in a old TI 305 rack. Do not know if that could be the issue since the power supply is part of the rack.

Has anyone seen this before?

Title: Re: CPU not going into run mode
Post by: ADC Product Engineer on August 20, 2019, 08:17:48 AM

Fairly common in those old 305 bases.   The electrolytic caps dry out and they take forever to start up.  Get a new base from Automationdirect.com.

Title: Re: CPU not going into run mode
Post by: Controls Guy on August 20, 2019, 11:24:23 AM

Yep, ditto.  Have experienced this a couple times myself.  ADC sells both adressing mode style racks.  I upgraded the last one I did.