Write data to PLC

[ceska]

i would like some help in writing characters/integers to a PLC. Allen Bradley SLC-500.

[Zvezdana S.]

The Lookout AB_SLC500 driver object does not actually support ethernet communication.
The protocols supported by this object driver are listed in the help of the object and ethernet is not one of the available options. Since the AB_SLC500 object uses the same configuration window as the AB_PL5 object, it is possible to select Ethernet for the Interface field and PLC500 for the PLC model, yet this is not a supported combination. However, there have been developer's exchange posts from costumers who have successfully establish communication through ethernet to the SLC500 series PLC using the AB_SLC500, but this is not supported by National Instruments and is something to try at your own risk.

Zvezdana S.
National Instruments

[P.Rayne]

Thanks a million for the help.. i will look into it. I did look at the
NI-Demo example before i posted the msg. As i'm new to this
environment i am fumbling around. i can read messages from a file with
ease.. depending on a signal from the PLC, but stll need to try and
write to the PLC. hopefuly the DS Write.vi will help.

i shall get back to you about my results..
cheers,
-U

[P.Rayne]

Zvezdana S :

i did go thru all the likns you referred me to. i see that i had been
thru them previously, may be i'm not getting the point.

i can read the messages from a file depending on a bit produced by the
PLC. so that means i can read from the PLC, i'm using Data Sockets to
do this...

the question remaninig is how do i write to the PLC. what exactly is
it i am missing here...write Data Socket..i see it..how do i know i'm
actually writing to the PLC ? sorry if i seem really ignorant, this is
all very new to me.

LookOut seems to be presented as an option in most of the links.

thank you much,
cheers,
-U