Help me decipher Smartscreen key file

Is there anybody out there with experience on TCP Smartscreen? Help me, please. I am trying to figure out how this button works. The PLC is a AB PLC5. The key file for this button is:

F2 key
No Screen Operation
Absolute
Pointer - B230:02/05
Min - 0 Max - 1
Address Table
Index Address Press Release
----- ------- ----- -------
0 B230:01 0002 0000
1 B230:01 0400 0000
4 B130:01 0400 0000
8 B130:01 4000 0000
9 no address set 0000 none
10 B130:01 4000 0000
35 B130:01 0400 0000
259 B130:01 4000 0000

I think I know that the pointer is a feedback/indication and the number are in BCD format. But I got confused by the "Address Index", most key(button) only got two index, so those are simple. This one really throw me a ride.

I dont know anything about Smartscreen but is it possible that is a reference to Multistate pushbutton? Most HMI's offer these. Since its using an address table it seems more appropriate its being used in a multi-state manner....IE Selector List????? or similar.

You got it, it's almost certainly a multi-state button. This one is giving me problem because the state, which i "think" is the *pointer* is only one bit, so it's 0 or 1, while there are 3 sets of value it can set (all momentary, reset back to 0000)

0002 DEC => BCD 0010
0400 DEC => BCD 0100 0000
4000 DEC => BCD 0100 0000 0000

I already got a few of the button configured where there only 2 state with 2 index, so they are simple. This one is weird. I have the screen shots showing just one button. Nope, I don't have access to the actual system to watch what happens @ PLC when the button is pushed

Try this site:

http://www.gpretrosys.com/html/smart_screen.html

This could be the only place left to get support for this. They may want money, but who knows?

harryting said:

Is there anybody out there with experience on TCP Smartscreen? Help me, please. I am trying to figure out how this button works. The PLC is a AB PLC5. The key file for this button is:

F2 key
No Screen Operation
Absolute
Pointer - B230:02/05
Min - 0 Max - 1
Address Table
Index Address Press Release
----- ------- ----- -------
0 B230:01 0002 0000
1 B230:01 0400 0000
4 B130:01 0400 0000
8 B130:01 4000 0000
9 no address set 0000 none
10 B130:01 4000 0000
35 B130:01 0400 0000
259 B130:01 4000 0000

I think I know that the pointer is a feedback/indication and the number are in BCD format. But I got confused by the "Address Index", most key(button) only got two index, so those are simple. This one really throw me a ride.

Click to expand...

Hi
Looks like you ran into a seriously corrupted Smart Screen archive.
The whole thing you post is a contradiction in Smart Screen terms:
NO Screen Operation : Fine just means this key will transmit data and NOT trigger screens
Absolute- Also fine. .Absolute is one of the four available addressing modes for this key. The other three are Relative, Direct and indexed.
MIN – 0 Max -1 means that the address table has only two entries, corresponding to the “Pointer address, having just two states (0 & 1)
The address table would make sense, if the indexes 4, 8, 9, 10, 35 & 259 were discarded.
My guess is that they are garbage anyway. If you do that, you have a key that works as follows:
When Bit B230:02/05 is OFF, and F2 is pressed, The Smart Screen transmits the number 2 to the word B230:01 and when it is released, it transmits a 0 to the same location.
In addition, when the bit B230:02/01 is ON and F2 is pressed, the Smart Screen transmits 400 HEC (1024 decimal) to the same word. Also 0 on release
Depending on how the PLC processes this data, another way of looking at this is:
Pointer bit OFF momentarily SET/RESET BIT # 1 in word B230:01
Pointer bit ON momentarily SET/RESET BIT # 10 (or 12, the way AB numbers bits) in word B230:01
Hope this helps and forgice the length – I don’t get to talk about this much any more
Spencer Persik
Gpretro Systems LLC
262 – 945 – 9157
[email protected]

I'm sure harryting appreciates the answer after having waited for thirteen years.