PLCforum.uz.ua

hello, I need help about profibus network. My PB network structure is: SCADA1 and SCADA2. It is a PC's with Woodhead PB card inside. My SCADA is Wonderware InTouch. PLC1 is S7-314C-2 DP. PLC2 is S7-314C-2 PtP with CP 342-5. PLC3 is S7-314C-2 DP The problem problem is that at the moment from SCADA1 a...

Hello, I got some problem with AI1 analog signal reading. My transmitter has 4-20 mA output and I use AI1 input to read this signal. I use 6DR2805-8J measuring range plug to convert 4-20mA to 20-100mV. For transmitter supply of 24V I use external power supply not from SIPART. So the problem is that ...

hello, ttsimatic. My final destination of this PtP communication should be CPU acting like a modbus master. So the modbus slaves normaly can not add some character to the end of its answer. Thats why I use delay time to detect the end of answer telegram. So I dont know how to get these answer data c...

Hi, all My CPU314C-2PtP PtP port receive incorrect data. From hyperterminal I send telegram with the values of 16#0A 16#0B 16#0C 16#0D and I use the function SFB61 "RCV_PTP" to receive this telegram. In this function I define the start address "DB15.DBB0" where my data will be stored. But when I am ...

hello, i have a problem importing tags from RSLogix 5000 to RSView Enterprise. I got a PLC application created with RSlogix 5000 and now im trying to import tags from this application to RSView application. I download some utility from rockwell site "Logix 5000 tag import utility". with this one i m...

thank you it works

best regards

hello, i configured hardware on RSLogix 5000, CPU with IO modules. On my desk i just have a CPU and i wont to try my program but i when i turn PLC to remote-run mode and write some value to non IO variable i get a major fault and routines are not executed. "(Type 03) I/O Fault (Code 23) At least one...

hello, maybe somebody knows the default Administrator "username" and "password" on WinCC flexible 2005.

Thanks in advance

Hello, everybody. I want to make some project and I want to ask you is this possible and if it so than what method I should choose. I'm using S7-200 226 PLC and Wavecom GPRS modem. a) In my PLC I need to establishe internet connection via GPRS modem with AT commands. b) PLC must be Modbus TCP/IP sla...

Hello, everybody.

Maybe someone has Modbus RTU FBD, for Omron CP1L-M30DT1-D or know where can I get it.

Thank You

I dont know how to re-upload

what you mean zenchek, I did not understand?

I will use S7-200 PLC for this. My point for this algorithm is: Lets say PID output is scaled from 0 to 100. that is equal to from 0s to 40s of PWM. So if my PID output is 50 the valve will be opened for a 20 seconds and closed for 20 s. But I still dont know how to open, lets say cold valve, if hot...

Why?

where can i get this algorithm? Besides the valves is Discrete, so PID output I must modulate with PWM

between 0% and 30% of what?

Well I'll tell yuo the situation. For example : In the room the desired temperature should be 20C. The sensor shows me 30C. I have two independent valves and two ducts. One duct suplly cold air and the second hot air. Is it possible to do PID regulator, wich first is closing hot air valve, when tihs...

Well, yes. I'll ask then in the different way. Could PID regulator could control the setpoint by executing two independent actuators?

I want to ask one question.
Is it possible that two actuators could control one setpoint and both actuators could not work by the same time.

Best regards.

thank you

Need working crack for Citect 6.10 version.

"PLC Server Request timeout from I/O server" maybe somebody knows what it means. This string shows up in hardware alarme page on citect

Hello, everybody.
I have some problem to using ActiveX object Microsoft ListBox.
And the problem is, that when I go on the ListBox and it's stay active, using of the mousewheel shuts down the Citect. Maybe somebody knows why?

Waiting for answers.

Thank You