Communication Function Programming and Entry Help. Schneider Electric ATRIUM, Premium, Quantum, Modicon M340

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Modicon M340, Premium, Atrium, and Quantum Using Unity Pro

Entry Help

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Communication Function Programming and Entry Help

Chapter 16 Communication Function Programming and Entry Help

Subject of this Chapter

This chapter presents the various entry help tools.

What Is in This Chapter?

This chapter contains the following topics:

Topic

Communication Function Entry Help

Access a specific instruction of the function, function block or DFB type

Address Entry Help

Page

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Entry Help

Communication Function Entry Help

At a Glance

During programming you can access an entry help screen allowing you to find out all the parameters of a communication function.

This help can be obtained from the Unity Pro library functions.

Illustration

The following illustration shows the entry help screen for the communication function READ_VAR.

NOTE: The number and type of fields vary according to the communication function selected.

Availability

This screen is available for the following communication functions:



DATA_EXCH

INPUT_CHAR

OUT_IN_CHAR

PRINT_CHAR

READ_VAR

SEND_REQ

SEND_TLG

WRITE_VAR

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Entry Help

Access a specific instruction of the function, function block or DFB type

At a Glance

The application-specific function may be accessed:



 by direct entry of the instruction and its parameters in an operate block via the entry help function accessible in the program editors (FBD, LD, IL, ST).

Calling a Function

The following table describes how to call a function.

Step

Action

Access the required editor.

Depending on the editor, select one of the following methods to open the function library:



Select the function to enter with the data editor. Once in the editor, right-click on the function (LD, FBD editors).



Right-click in the program editor and select the option FFB Input Assistant.

Note: The function input assistant window appears:

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Select the type of FFB required (if it is not already entered).

Then select the name of the instance (where necessary and if available).

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Entry Help

Step

Action

Many instructions have a customized entry help screen. You can access this screen by clicking the

Special Assistant button.

Enter each parameter of the instruction (each instruction is explained in the relevant application-specific documentation):



 in the customized detailed data entry screen, or in the Prototype area of the Entry field.

Confirm by clicking Ok.

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Address Entry Help

At a Glance

To assist in entering the address, a help screen is available.

With this screen, a description of the architecture in which the communication function is integrated and generated can be added. By completing the fields of this description, the address is automatically generated.

Accessing the Help

When entering the parameters of the communication function, you can access the address entry help with the following button:

Illustration

The following illustration shows the address input help screen for a communication function.

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Entry Help

Mode



The first parameter to select is the Mode. With it you can select one of the following communication modes: local (communication by bus) remote (communication by network)

Network Level

For remote communications only, the network level is used to:



 enter the network number, enter the station number, select the station type.

Station Level

Depending on the communication function, with this parameter the type of exchange can be selected:



The Application box selects an exchange with a PL7 application (corresponds to APP addressing).

The System box selects the PLC system of the station designated by the network level

(corresponds to SYS addressing).

The Module box means that the destination device is connected to the station via a link (Uni-

Telway, Modbus, Modbus Plus or Fipio). This case requires you to specify:

 the position of the module supporting this link,

 the type of this module.

Protocol

The Protocol field defines the exchange protocol used between the station on the network and the exchange’s destination device.

Device Level

This parameter is used to specify:



 the type of destination device, the address of this device.

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Limitations

In the address entry help screen, communications from a Uni-Telway slave require coding of the destination address in the transmission buffer (see Unity Pro, Communication, Block Library).

The help window allows full entry of the section corresponding to ADDR() advising the user that the additional buffer must be coded.

Remote station address coding is only supported by the following devices: TSX 17, TSX 37,

TSX 47-107, TSX 57.

For third-party devices, only entry of the port number is proposed. In other cases the address must be entered manually.

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Modicon M340, Premium, Atrium, and Quantum Using Unity Pro

Index

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