I guess I was under the impression you were using a PV Component.It looks like the PV800 (which I haven't gotten my hands on yet) is a little more than a PVC, however a far cry from PV+ (Never thought I was ever going to state this!. I understand that the equipment is bare bones and not the same as controllogix, but I would think there would be a physical way to setup some sort of rolling counter or heartbeat type thing to get what I'm looking for. This results in warnings when I build the program saying 'JOG_SPEED: Multi-thread access to global variable may need to be surrounded by calls to UID and UIE'.Īnyone know of a different way to set this up or work around to quit getting those warnings? In the periodic portion, though, I setup the push button control that will increment the value up and down with PV800 pushbuttons.

For example, I'm using Jog_Speed in the continuous task where it's going to be used to command an output value as quickly as possible. I setup some of the basic limits and control bits in the continuous portion, but am using them throughout the program. I tried to setup the structure of the program fairly similar to how I would a control logix, so I have STI's in place of periodic tasks and have a 'continuous task' setup by setting the cycle time programmed to 0 ms so it'll run as quick as it can. The other issue I've come across is more of an annoyance I think. I also haven't seen any way to perform some kind of expression or equation within the PV800. I was hoping I could find a way to link the System Tags to and External Tag, but haven't yet figured out a way to do that. I tried to setup an external tag with a limited value, then would have the PLC write a number out of bounds in hopes the PV800 would correct the number, but that didn't work. I've yet to find a GSV type function in the micro, and the global connections in the PV800 only has a 60 second max update rate writing out. We'll also use a GSV for comms with other devices to make sure that everything is working as it should. Generally what we do there is setup a heartbeat so that the PV+ internal seconds value writes to a logix tag and we'll monitor that it updates. Usually I work with PV+ and controllogix, but this was a project to be done on the cheap. I have a couple of issues I'm trying to work out.įirst, I always like to verify communications are working between my controller and the HMI.

Allen bradley hmi pv800 disable buttons