Internet PLC Forum

I am trying to store a 10 digit number entered from a keypad in the non-volatile memory of the FMD88-10. It gives me some wierd number when i read it back from the memory. I understand it can store only a 4 digit number ,what could i do about this scenario?

I have downloaded your progam(HMI65to80) which i use to enter data from the keypad,and comes with the Installation CD.When i try to enter more than 10 digits it does not accept the enterred number giving me an error(some absurd number).I tried changing the lenght of Z in the custom function of the program but it does`nt help.The custom function is as below

' This function handles the keypad scanning and make sure that a key must be
' pressed and released before the next key can accepted. It reserves the use
' of the Z$ string variable so you should avoid modifying Z$ in other part of
' the program.
'============================================================================

DM[900] = INPUT[2]  ' Get data from input #17-32

IF DM[900]=0
   Z = -1       ' no key pressed
   RETURN
ENDIF
IF Z >= 0       ' previous key has been pressed.
   IF TESTBIT(DM[900],Z) RETURN  ' previous key not yet released
   ENDIF
ENDIF

FOR Z = 0 to 11   ' scan 0 to 9 and <- key
  IF TESTBIT(DM[900],Z) GOTO @10: ENDIF
NEXT

@10 IF Z = 10     ' <Del> key has been pressed.
       IF LEN(Z$)>0
         Z$ = MID$(Z$,1,LEN(Z$)-1)
       ENDIF
    ELSE          ' Check if numeric keys 0-9 has been pressed.
       IF Z < 10 AND LEN(Z$) < 10   ' not more than 10 digits
         Z$ = Z$+STR$(Z)
       ENDIF
    ENDIF

I am using a keypad to enter a value which sets the timer value.I use F1 and F2 keys to increase the value of the timer.But the problem is that the timer does not start from the value i enter immidiately as i enter it on the keypad.For example the set value of the timer is 800 sec and i input a timer value of 30 sec(by decreasing using f2 key) ,it first finished the 800 sec and then starts counting down the 30 sec.How do i update the timer value immidiately as i enter it using the keypad? I guess it is beacause i am using the gettimerSV[] function to get the set value of the timer instead of the present value.Do we have a funtion like gettimerPV[] or something?

What are the non volatile memory locations on an FMD88-10? Do i have to use the SETSYSTEM 252, 0 command?How can i store a constant in a non-volatile memory location?

I sent it from my gmail ID, i am not using any expansion module since the inputs and the outputs are just being used in my programs and not to turn on/off physically any device.

I have used inputs from No1 to No256, Outputs from 1 to 256 and timers from 1 to 64. I feel my inputs 106,107 (which i set in the ladder diagram at some point)do not seem to function when i transfer it to the PLC and whereas during simulation it seems to execute fine.

When i simulate my circuit on Trilogic it works fine without any errors but sometimes the timers i use in the circuit stop working and the entire circuit stops responding. The number of rungs are 61, is it because there are 2 many rungs in my circuit?

Yeah this works fine.But there is another problem
When i send my first modem configuration message(at+cmgs=1),the response is an OK.After this i send the at+cmgs command.Now when i search for DM[1] it has another ascii value(13 for Carriage return) in it and not ascii value 62.When i check the position of ascii value 62 in the COMM port it comes after 8 response characters 13(CR),10(NEXT LINE),79(O),75(K),13,10,13,10,62. So how in my program can i check for this rather than for checking DM[1],since only 1 bit is read at a time from COMM port.