Com'X Analog Input for WAGES

Overview

Each Analog Input can accept 4 types of sensor :

• PT100,
• PT1000,
• 0-10V and
• 4-20 mA.

The 2 first types of sensors are temperature sensors, and their conversion rule "Resistor = f (Temperature)" is known,

Thus the device types of those sensors are already available as a built-in device type in the Com'X

For other sensors (0-10V and 4-20mA), the type of measurement cannot be known by advance.

it will be first necessary to create a custom device type (where you will assign the type of measurement, and the conversion rule)

1st simple Example : PT1000 temperature sensor

You just have to connect your sensor and declare them as PT100  or PT1000,

As the PT1000 is a built-in device type, it is already available in the list of sensors (named as Built-in models) :

And you will get directly the value of the temperature in the HMI.

2nd more complex Example : Humidity sensor SHO-100

Step one : define the custom model

This sensor does not belong to the built-in model. It is thus necessary to define it using the "Custom library"

You have to create a  new model,

Give it a name ("SHO-100"),

Define the measurement provided by this sensor as the "Element" field ("Humidity rate") and

Define the conversion rule by specifying the min and max value

NOTE : some measurement are already known (Humidity rate, CO2 Level, Level), if you select one of them, the unit can be selected in a list)

If the measurement of your sensor does not belong to the list, it is possible to create a "Custom" one and enter a "Custom" unit

Using the custom model

Once the model has been created,it will appear in the list of AI choice and it will be possible to use it :

And you will get directly the value of the Humidity Rate in the HMI.

NOTE : If you have done a mistake in the model, you can modify it, and all the instances of this model will be changed

You can also import / export your model to another Com'X

About Modbus-TCP server

The AI are also available through the Modbus-TCP server :

If AI-1 is used, its value (coded as Float32) is available at registers 10000 and 10001 (Most significant register first)

If AI-2 is used, its value (coded as Float32) is available at registers 10002 and 10003 (Most significant register first)

If the device type is a built-in model (PT100 or PT1000), the value returned by the Modbus-TCP server is the temperature value

If the device type is a custom model (0-10V or 4-20mA), the value returned by the Modbus-TCP server is the raw value : voltage or current value

     Regards

     Jef