Inputs, Outputs and Flags for AC500 V2 Products

All operands supported by IEC 61131-3 editor are described in the : Configuring I/O Links

In the following details on the “address” operands (%I for inputs, %Q for outputs, %M area and %R area for variables with address) and the data backup and initialization.

All addressable operands can be accessed bit-wise (X), byte-wise (B), word-wise (W) and double-word-wise (D) in Automation_Builder. The Motorola byteorder is used for operand access.

Declaration of addressable operands:

The declaration of the operands in the addressable flag area is done as follows:

Symbol AT address : Type [:= initialization value]; (* comment *)

[.] optional

The inputs and outputs are declared using the PLC configuration.

• Interfaces for Inputs and Outputs
  • Address Scheme for Inputs and Outputs
  • Example for Addressing in BOOL / BYTE / WORD / DWORD
• Addressing of Inputs and Outputs
• Processing of Inputs and Outputs in the Multitasking System
• Addressable Flag Area (%M area)
• Absolute Addresses of Operands
• Addressable PERSISTENT Area (%R area)
• System \ Start-Up / Program Processing
• Data Backup and Initialization
  • Initialization of Variables, Overview
  • Declaration of buffered Variables and Constants