jingo
Member
Hello everyone,i was reading an s5 program and i saw ob21. Just want to know it's function, how do this ob work. Sorry to ask this cause i'm just a beginner..
OB21 Function in the program
- Thread starter jingo
- Start date
L D[AR2P#0.0]
Lifetime Supporting Member
The search facility is your friend....
http://www.plctalk.net/qanda/showpost.php?p=108440&postcount=2
http://www.plctalk.net/qanda/showpost.php?p=108440&postcount=2
Similar Topics
Hi.I want to migrate S5-100U CPU 103 program to S7.It is giving error due to the following lines.These lines are exist in OB21.
L KH 4435
T RS 8...
Hi, I have attached herewith one image which our programmer has been used in S7 1500 PLC. Now we need to use the same instructions in S7 1200 PLC...
Im trying to create a level indicator for water Tank
i have used the ADD function while the pump is on and level increasing
everything works...
Good morning crew!
Ok my logic works but I am missing something. When the start button is pushed it should like the red light for 4sec then shut...
Please see attached file. I need this program in Function Block form but I am totally lost on this. Any help would be appreciated.
Thanks!