hdhosseini

sundar

I want one blink bit every 2seconds(2 seconds on 2 seconds off then repeat) its simple in all PLC. i checked in S7-200 also , my attached method is working perfectly. the same logic is not working in s7-300. i interchanged the network arrangement(top to bottom) also.

How the s7-300 scanning the program.

Dear sundar
Please send us the original logic you tested with S7 200.The logic
attached may not work because TON needs trigger to be active till 2 seconds
and also note that trigger and reset can not be same signal at the same time.
PLC clock memory also provides pulses likes you want but the
longest pulse provided by PLC is 0.5 HZ, one second on and one second
of and this is repeated with period of 2 seconds.Check the attachment
for a method to generate a 2 second on and off as you like.It is also
to generate this by 2 timers.

BR
Attachment:logic.zip (15 Downloads)

30A

What is this software u have used for simulation? the picture dump in the attachment you have attached is RESULT?!?!?!?!

It seems fantastic.

weakpoint of siemens is the simulator. doesn't siemens have a graphical simulator?

Histogram?