Hi.
I have an application where i want to control the temperature in a room with a resistive load, Controlling the load with a PLC.
Ok so im going to use a powercontroller. The power controller takes 4-20mA and controls the load 0-100%. To be able to control the temerature due to a temperature...
Hi.
I like to control an electrical underfloor heating termostat with my PLC (Beckhoff). I like to be able to set setpoint (Temperature) and read flor temperature in the PLC
4-20ma or 0-10V is good, but also any bus signal is fine
However I cant find a sutible termostat for this job. Any...
Hi,
Anyone experience with Citect SCADA software. Im planning to use it in a building automation project. The vendor says it (CitectFacilities) is compleatly free. I find this hard to belive. It seems to be such a complex and powerful software. Is this true?
Is it a good software?
Thanks...
Hi.
I have an application where I going to control a servo motor. The input to servo motor driver card is +-10V. So I have a +-10V output card in my Beckhoff CX1030 controller.
The position of the servo is +-30degree, hence +-10V is +-30degree. The speed of the servo is given by frequency of...
Hi.
I try to implement an array of struct in IEC61131-3 ST language.
The C code look like this:
Code:
Struct BDD
{
Unsigned char a1;
Unsigned int a2;
Unsigned int a3;
Unsigned int a4;
}
struct BDD BDD_table[4] = {
{'X', 1, 1, 2},
{'a', 0, 100, 0},
{'a', 1, 100, 2},
{'X', 2, 5, 4}
};So...
Hi.
Im going to control a galvanometer (control of a mirror - set position (angle), set velocity, position feedback) with an analog driver board. The driver galvanometer is controlled like this:
analogue input (selectable +/-3, 5, 8 or 10V).
The position output is always +/-3V. Depending on...
Hi.
Im try to do a simulation. Its a complex assembly and I use automatically convert constraints to standard joint to save time. Now this is ok. However I like to delete some joints and change some welded groups but its not possible to delete or change anything. Why? Do I have to build...
Im going to measure frequency from a hydro generator.
task:
The original signal is from the potential
transformer (pt) connected to the terminals of the
generator. This signal is first fed to an isolation
transformer to isolate the digital side. Then the
isolated signal goes through a filter...
I use inventor 5.0
I have some problem to understand the center of gravity function. Where is the reference point? Is it possible to se it visual?
Kind Regards
Hans
