Device Module Description
ATS22_ModbusSL Device Module Description
The Device Module provides a ready-to-use coding template as a pattern to monitor and control an Altistart 22 soft start - soft stop unit via Modbus SL through a EcoStruxure Machine Expert controller.
The Device Module ATS22_ModbusSL is represented by a function template and consists of a global variable list (GVL), and a program. After instantiation of the Device Module, these objects are added to your project. They appear with the name which has been assigned using Add Function From Template.
The GVL provides the variables which are used to monitor and control a soft start - soft stop with the Altistart 22.
After instantiation, a variable wModbusToken is added to a global variable list with the name GVL. In the program, when the wModbusToken variable is equal to zero, the communication can start. When the communication starts, the used slave address is written to the variable. When the communication is finished, the value 0 is written to the variable. Use this variable to organize other Modbus SL communication function blocks in your application.
The program provides the following features:
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monitor the communication state of the device
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monitor the state of the device
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control the device in auto mode
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control the device in manual mode
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control the device in local mode