Jump to content

Count

Members
  • Posts

    5
  • Joined

  • Last visited

Count's Achievements

Newbie

Newbie (1/4)

0

Reputation

  1. Hey everyone I'm trying to be able to change my temperature set point from my HMI, without using a PID loop. Essentially, ive used the 'Store Direct' function to save my chosen set point to an MI. I will then use the HMI keypad to enter in my new set point. My problem is that the new set point doesn't save when i enter it. -------[#240]--{STORE DIRECT}----[MI 4]--------- Sorry i cant draw it any better, but im sure you understand. Cheers
  2. V290 Visilogic 9.5 What is the best way to set the lights to come on in my wood kiln during work hours, then off after work finishes? Currently i have a set/reset coil enabled via the clock function under the Utils menu. Though the lights don't actually turn off. Perhaps a toggle coil would be better? Though im confused as to how toggle coils differ from set/reset coils. Current ladder looks like this: Lights {Day of the Month}-----{Time of Day}------{\}------------{S} {Day of the Month}------(Time of day}--------{R} Perhaps it is the parameters themselves, ie Lights on at 0700-1700 Lights off 1700-0700 Any help would be great
  3. Cheers Alexander! Very helpful! My hardware is a Vision 290, it dosent appear to be on the hardware list in the Hardware Config menu.
  4. Hey everyone I'm very much new to both ladder logic and plc controllers and am running U90. I'm trying to use a plc to control extraction fans as the output and a temperature probe to read air temperature. Trying to get the intake and out take fans to switch on when the temperature gets above a certain point, and then run until the temp reaches a lower point. I know that function blocks are required to do this, but are unsure of how to program the plc to read the temp probe or how to program FB's. This may seem backwards compared to the calibre of the other posts here, but any help would be outstanding!
×
×
  • Create New...