RSLOGIX 500 Wheel

[JUMBOCHRISTY 0]

Can someone please help me with a program I have hit a brick wall. I need to be able to turn a wheel clockwise to make a counter count up and anti-clockwise to make the same counter count down. So basically when input I:1/1 then I:1/2 comes on the counter will count up and when I:1/2 then I:1/1 comes on the same counter will count down and when the reset button (I:1/0) is pressed the counter will reset and the counted number will be displayed on a seven segment display. Any help would be much appreciated.

[TimWilborne 108]

What PLC are you using? Part number?

[JUMBOCHRISTY 0]

Its an rslogix 500

[the_msp 2]

That would be the software you are using. What hardware are you using?

[HKU_MS 0]

RSlogix 500 is a programming software package that allows use of several different controllers if you are using one of the newer ones such as a micrologix 1100 there is a built in high speed counter that used with a simplified encoder wheel can do what you want although you will need to use the inputs in a different order I0:/0 = input A I0:0/1 = input B reset if I remember right is on I0:0/2 using the built in quad encoder counter. if you have to build your own encoder in software for an older style SLC look into masking a word to control your counter direction.

[gbradley 0]

Can you use a standard 800T Selector switch, instead of a Wheel?

[b_carlton 61]

Please post the program you have developed so far. What are your problems?