DL305 (TI305) PLC programming problems

[pambridge]

I am currently editing a PLC program that was written by somebody else. Unfortunately I am no expert on PLCs,

but can usually get by.

The PLC is a DL305 (TI305) PLC, and I am having difficulty certain rungs (see attached GIF picture)

What does DSTR and DOUT do in this example.

These rungs appear at the very beginning of the program.
Can anybody explain (in laymans terms) what this rung actually does?

Any response would be appreciated.

 

[thierry2003]

DSTR K0 loads the BCD value K0 into the accumulator.
The DOUT instruction writes the value from the accumulator (16 bits!) to the specified register. For example DOUT RC310 writes the value from the acc. to register 310 and 311. (both are 8 bits wide so two consecutive registers are used)
So the rung you showed does some initialisation, it writes the value 0 to the specified registers.

Hope I am not mistaking....

 

[icky812]

Thierry2003 is right. This rung when active, clears a range of internal coils. The following ranges of coils will be cleared:

C310-C317
C270-C277
C230-C237
C200-C207
C250-C257

 

[pambridge]

Thanks

Thanks guys, its fantastic that people give such a quick response to a question.

I'll be visiting this forum more often.

Thanks again.

 

[icky812]

DOH!

Lets try that again. Since it is a Double OUT the "correct" ranges will be:

C310-C327
C270-C317
C230-C247
C200-C217
C250-C267

 

[elevmike]

pambridge,

You also posted this question on the AD forum. As you can see these guys here are much more responsive. Icky812's second response is correct.

good luck,
Mike