SCADA-Administrator input Channles

[teleco]

Hello,

I have some questions about input channels parameters:

1.- The number parameters, are an internal addressing or are the channel numbers used in communication with the devices throught Modbus, OPC,… I mean, if I want to simulate the behaviour of the ADAM-6015 Server room with a Modbus simulator, I have to change the same channel 101 in the simulator in order to see the response in t4?

2.-In the example, ADAM-6015 Server room, the tags t4,t5,… are defined as “real” channel types, but actually, you obtain the real number after using the formula Cnl*200/65536 – 40, so, is not more correct to use the “calculated real” channel type?

3.-What is the meaning of “signal” parameter?

4.- In tags t4, t5 max and min, in output channel parameters, are indicated the respective outputs channles, but, what kind of data do you send to the outputs and when? I mean, the output is sending automatically when an event on this channels (t4_min,…) occurs or the command is sending manually by the user in SCADA-Web table by pressing the > symbol? I understand that t4_min,max and t5_min,max are tags, not for information displaying like charts or data, its functions are sending commands only, it is?

[Mikhail]

1. To simulate “ADAM-6015 Server room” do not modify anything in Rapid SCADA configuration. Just tune up the simulator according to KpModbus_Adam6015.xml template. 101 is internal channel number for Rapid SCADA. In Modbus terms t4 is an element with address 5 from Holding Registers (4x) data table.

2. Calculated Real type is set for a channel if its formula refers to data of other channels. Use Real type if channel data is received from a device.

3. Signal binds an input channel to a tag of device. This field is processed by SCADA-Communicator.

4. The items t4_min, t4_max, t5_min, t5_max display data and allow sending commands. Each item of table view can hold either input or output channel. Channel numbers are written in item’s hint. Commands are sent manually in this example.

• This reply was modified 9 years, 2 months ago by Mikhail.

[teleco]

So, as I understand. Scada-Communicator receive some data from address A, with the help of the template, it associates address A with signal B, in SCADA-Administrator is specified signal B as channel C, and finally SCADA-WEB shows the data C (modificates by formula or not).

Now, in your example, t4_max is an signal received from the device, but, supposing I want to setup t4_max as an automatic response to the device in order to cool it (for example) sending a command throught Resett4_max, could I write a formula in Formula field of input channel 104 (t4_max), something like this:

If t4>t4_upperLimit then send 1 to t4_maxOutputChannel

My idea is when t4 channel is higher tan the specified upper limit for it, then the input channel t4_max sends 1 (ON) to its output channel associated (11 in this case) in order to, the output channel Resett4_max send 1 (ON), throught command number 5, to the fan of the device.

Is possible to write a formula which does it?

[Mikhail]

Hello,
Using formulas you can perform calculations but can’t send a command. There is another tool for sending commands depending on conditions: Automatic Control Module.

Automatic Control Module is commercial, the cost is US $20. You can try it for free in the test mode.
If the price is too high, it is possible to develop your own implementation as described here.

• This reply was modified 9 years, 2 months ago by Mikhail.

[Mikhail]

Yes, you have correctly understood the mechanism of interaction between Rapid SCADA applications.

[Mikhail]

In my opinion you need to apply hardware protection of your system in case that server breakdown.

[teleco]

Why do yo say that? Is often the server breakdown?

[Mikhail]

Of course not. It depends on your hardware, power supply, etc.
In some industries there are very strict requirements for system safety.
Rapid SCADA works stable 24×7.

[Author]

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