brettshelley

Not quite understanding you here Steve?!? Sorry

Hah, an answer! Agreed, I have less posts, but without going into detail have been on the verge of death since my original posts (Illness) but now are here and building panels for customers once again! I am sitting in my lounge, drinking a glass of port thinking of the project that is doomed for failure within the bounds of my garage. How the hell do you manipulate an analogue pid variable to a pulsed ON/OFF? I have tried a PWM, a pulse timer with the MV value maniputated to adjust accordingly to the MV!!!! ARRRGGGHH.... There must me an easy way to adjust an output based on an analogue variable. Any ideas before I open the bottle of port and begin to simulate ideas into the morning!! Cheers

See, there is 8 !!!!

Yes, this is possible...

Hi guys, has anyone used the PIDCAL function in the LG PLC range?? Have to read a thermocouple reading then use the PID function to pule an output direct to a SSR. It is easy for an analogue output (MV), but cannot work out how to pule the SSR via the MV??? Any ideas would be great.

Well, got to thinking, will use an S7 PLC with both the RS485 ports. Will have two 232-485 converters and recieve the signal on one port, transmit it back through port 2 then process the info held from port 1 in the plc. Phew!! Any other ideas would be of help! Cheers, Brett

I am designing a system to integrate an existing barcode scanner to an S7 PLC. The barcode scanner uses a single RS232 which is connected to a PC. I need to gain access to that infor so that my S7 can read the same string? What hardware can be used here??? Cheers, Brett Shelley

Well,lots of info there for me to try! That black box seems the most practical, but will give the hardwire setup a go first.... Wish me luck and thanks for the response... Cheers, Brett

About 10 Metres away!