Communication using ASCII

[ceilingwalker]

Good day all. I have a SLC5/03 that I'm trying to write ASCII instructions to send to a Red Lion Display. This is my very first attempt at a project such as this. I thought I had studied the instructions well enough, however my project is not doing what I would like it to do. Looking at my attachment, could someone please give advice? My goal is to send a timers' accumulator value to a serial slave display. If I'm leaving something out please let me know. Thank you.

 

[ceilingwalker]

I don't think I gave enough information above. What I have are two timer accumulator's that I need to display. The way I'm trying to work it is, down-timer turns on to show how much time is left in the process. After that timer times-out, I now have an up-timer that will show how much "extra" time basket has been in the tank. So, whilst it is timing-down, that is the string I want displayed. After that timer completes, I want the the string for the accumulator for the up-timer displayed.

 

[OkiePC]

I made several changes to your example...have a look...

How many characters can your message display use? Would you like to add some descriptive text to prefix each of the two values being displayed?

 

[ceilingwalker]

How many characters can your message display use? Would you like to add some descriptive text to prefix each of the two values being displayed?

Display has 6 characters, no text, only numbers.

 

[JeffKiper]

try to use use this cool little trick I learned yesterday
Make your string ST11:1 "N01[t4:1.acc]" see it that transmits out N01600
This is ASSuming that t4:1.acc is equal to 600.

 

[ceilingwalker]

try to use use this cool little trick I learned yesterday
Make your string ST11:1 "N01[t4:1.acc]" see it that transmits out N01600
This is ASSuming that t4:1.acc is equal to 600.

Are you saying to try it using the program I posted to this thread?

 

[JeffKiper]

read this thread
http://www.plctalk.net/qanda/showthread.php?t=64080 it could cut down on your program since you have 3 different displays you might only have to trigger the AWA and send out strings no other conversions.

 

[ceilingwalker]

I made several changes to your example...have a look...

How many characters can your message display use? Would you like to add some descriptive text to prefix each of the two values being displayed?

I tried it but my display continues to read only "0". I made sure baud rates and other params match. Still just a "0".

 

[bernie_carlton]

You might have to do a MOV of T4:1.ACC to an integer - N7:something. Then use that N register's address in the string.

 

[JeffKiper]

The first thing I would do is start with a clean slate and just 1 rung may be 2 use the example I sent you.


what did you send out the Serial port? what did ST10:1 have in it.
Give bernie's MOVe a try I didn't tnihk about it not sending out the data

 

[ceilingwalker]

The first thing I would do is start with a clean slate and just 1 rung may be 2 use the example I sent you.

Ok. All I should have to do is add timer T4:0, right?

 

[JeffKiper]

you can if you want or just open up the data table and change the .ACC value

 

[ceilingwalker]

you can if you want or just open up the data table and change the .ACC value

Still getting the "0" from the display.

 

[JeffKiper]

what value are you transmitting out the AWA

 

[ceilingwalker]

what value are you transmitting out the AWA

That would be the ST10:1, right? Data table shows the accumulator value for ST10:1. AWA doesn't seem to be active. I tried toggling the B3:2/1 but it triggers the "DN" bit.