Tab Addresses (PLC address formats)

In this tab you define the identifier and the data type for each of the inputs and outputs. You also specify the signal type of the inputs and outputs. EPLAN then searches the schematic for data corresponding to the entered identifier and data type and creates the assignment list based on the affected definition.

Overview of the main dialog elements:

Addressing:

Inputs and outputs can be addressed in the following manner:

Bitwise
Bytewise (8 bit)
Wordwise (2 Byte or 16 bit)
Double wordwise (4 byte or 32 bit)
Long wordwise (8 byte or 64 bit).

Separate settings are possible for each of these addressing types.

Code:

Here you define a code for the data type. The code may consist of one or more letters and/or numbers. EPLAN uses the code to identify the PLC inputs and outputs in the schematic. The code is also used for filtering entries when importing assignment lists.

Example:

Assignment of codes:

Code consists of	PLC input	PLC output
Identifiers	E 3.1	A 4.5
Numbers	1 3.1	2 4.5

Data type:

Here you assign particular data types to the address type. The entry can be made manually or from the drop-down list. Sensible entries are:

BOOL
BYTE
WORD
DWORD
LWORD.

In addition the entries INT, DINT, LINT are possible, these correspond to WORD, DWORD, LWORD and are supported for the PLC data exchange in the AutomationML format.

Type of signal:

Select whether it is a digital or analog, input or output from the drop-down list.

Increment:

Here you enter the increment used for each step when numbering the PLC addresses.