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Full Version: Basic Module and M1 file communication

Forums.MrPLC.com > PLCs and Supporting Devices > Allen Bradley

KevinR

Jan 17 2008, 11:42 AM

I'm having a problem with my Basic Module's (1746-BAS) communication with my SLC 5/04. I wrote a BASIC program which uses CALL 22 to transfer 15 characters over to the SLC, which would hopefully copy them to my N43 file.

Here is my BASIC code:

CODE

10 MODE (PRT2,9600,N,8,1,N,R) : REM Set PRT 2 com
12 CALL 18 : REM Ensure CTRL-C is enabled for STOP
20 PUSH 2 : REM PRT 2
30 PUSH 15 : REM transfer 15 characters
40 PUSH 0 : REM No delimiter
50 PUSH 1 : REM USE M1 file
60 PUSH 0 : REM NO offset
70 PUSH 0 : REM NO string
80 PUSH 1 : REM byte swap
90 CALL 22
100 POP S
110 IF (S<>0) THEN PRINT "UNSUCCESSFUL CALL 22 SETUP"
120 REM CALL 22 Loop
125 GOTO 120
130 END

In the BASIC manual from AB (1746-rm001_-en-p), it gives an example ladder to use, but it doesn't seem to work for me. If anyone with more experience with this than myself could help, I'd be greatly appreciative.

KevinR

Jan 17 2008, 12:04 PM

I think I may have figured it out. In their examples they latched a bit that doesn't need to be latched. Hopefully this will clear up my problems.

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