Engine Speed Output Request/PV780

Discuss issues and ideas you have to configuring displays with PowerVision
tshiii
Posts: 79
Joined: Thu Sep 09, 2010 8:56 pm

Engine Speed Output Request/PV780

Post by tshiii » Fri Oct 06, 2017 4:58 am

Hello,

Please kindly advise if the following requests are feasible on the PV780. If yes, please also advise how to set by PowerVision.

1) Regarding the J1939 Engine Speed, analog signal to output proportionally within 0-2000 RPM through Frequency Output 1 (Pin #14).

2) Digital output to ON through Pin #22 when engine RPM is up to 500 RPM.

Thank you,
tshiii
boyce
Enovation Controls Development
Enovation Controls Development
Posts: 322
Joined: Wed Sep 08, 2010 5:09 pm

Re: Engine Speed Output Request/PV780

Post by boyce » Wed Oct 11, 2017 3:28 pm

(I moved this topic here to Programming and Configuration.)

I believe what you have asked about is very doable with PowerVision.

1) Setting the frequency output. The J1939 Engine Speed parameter to fire a Engine Speed Update event when the RPM changes.
enginespeed1.JPG
enginespeed1.JPG (110.42 KiB) Viewed 70 times
The Engine Speed Update event fires the action to set the Frequency Output.
enginespeed2.JPG
enginespeed2.JPG (99.96 KiB) Viewed 70 times
The Frequency Output is using the J1939.Engine.Engine Speed variable.
enginespeed2b.JPG
enginespeed2b.JPG (74.56 KiB) Viewed 70 times
2) Here is an activity diagram example of setting the digital output high if the RPM is up to 500, low otherwise. The activity diagram runs on the same Engine Speed Update event.
enginespeed3.JPG
enginespeed3.JPG (125.29 KiB) Viewed 70 times
enginespeed4.JPG
enginespeed4.JPG (123.47 KiB) Viewed 70 times
enginespeed5.JPG
enginespeed5.JPG (121.72 KiB) Viewed 70 times
It should be easy to change this if you want to make the frequency output proportional or take into consideration the count per RPM or if the logic is backwards on the digital output. There could be a couple ways to understand the request, but it should be easy to change.
Boyce Schrack
Enovation Controls