adccommunitymod (AutomationDirect) asked a question.
F2-cp128
Created Date: July 30,2012
Created By: scott.lawrence
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Still working through this Basic programming... I'm trying to create a handshake when a program starts. I 've created a variable in the CoPro, and I'm sure I don't have it mapped to the PLC bit correctly. The Basic program runs without errors, but the PLC bit doesn't toggle :/ Pointers, anyone?
Created Date: July 30,2012
Created by: bcarlton
Can you post your BASIC program?
S205_C(0) = 1 should turn on C0 within the PLC
S205_C(0) = 0 should turn off C0 within the PLC
Created Date: July 30,2012
Created by: scott.lawrence
Bernie, this is a snippet from the program. CPHB is the variable I created.
28 IF TIME>= 64800 THEN 30 ELSE 36
30 TIME = 0
32 S205_C(1) = TIME
34 REM END_IF
36 IF TIME> CPHB + .5 THEN 40 ELSE 44
40 S205_C(1) = NOT (S205_C(1))
42 CPHB = TIME
It is supposed to toggle the C1 bit in the PLC, but it isn't working like I expected. As stated before, I'm still trying to get back into Basic, since I haven't worked with it since school, some 15+ years...
Created Date: July 30,2012
Created by: MacS
This is the only suspect line I see:
32 S205_C(1) = TIME
Between the time that line 30 executes to zero TIME and line 32 executes, the TIME value will be non-zero.
If you want to turn off C1 in line 32 then the line should be:
32 S205_C(1) = 0
I loaded the code you showed as is with the addition of line 41 for debug and line 44 to loop back to line 28:
And C1 toggled every half a second. I saw this:
>list
28 IF TIME>=64800 THEN 30 ELSE 36
30 TIME=0
32 S205_C(1)=TIME
34 REM END_IF
36 IF TIME>CPHB+.5 THEN 40 ELSE 44
40 S205_C(1)=NOT(S205_C(1))
41 PRINT1 S205_C(1)
42 CPHB=TIME
44 GOTO 28
PRM 0
READY
>run
65535
0
65535
0
65535
0
65535
STOP - IN LINE 44
PRM 0
READY
>
Make sure that the PLC Ladder Logic is not writing to C1 with an OUT or SET coil.
Created Date: July 31,2012
Created by: scott.lawrence
Mac, this was what I was attempting....I double checked the code I posted against what I had in the CP 128.... the code in the CP 128 had 'ELSE 63 ' instead of 36. Sometimes my dyslexia is a PITA. Thanks guys!
Created Date: July 30,2012
Created by: scott.lawrence
Still working through this Basic programming...
I'm trying to create a handshake when a program starts. I 've created a variable in the CoPro, and I'm sure I don't have it mapped to the PLC bit correctly. The Basic program runs without errors, but the PLC bit doesn't toggle :/
Pointers, anyone?