System Technology of CPU and Overall System

• Handling of Remanent Variables for AC500 V3 Products
  • Adding a Global List of Persistent/Retain Variables
  • Declaring a new Variable in Global List
  • Declaring a new Persistent/Retain Variable in Local POU
  • Initialization of %M Variables
  • Behavior of Retain Variables
  • PLC Shell Command for Import and Export of Retain/Persistent Variables
  • Import and Export of Retain/Persistent Variables by Library Functions
• System Processing
  • System \ Start-Up / Program Processing
  • Setting Standard Configuration
• Real-Time \ Clock and Battery
  • Real-Time Clock
  • AC500 Battery
• LEDs, Display and Function Keys on the Front Panel
  • Overview
  • Startup Procedure of the PLC
  • Description of LEDs
  • Description of the Function Keys
  • Enable flashing of display
  • Function Blocks
• Onboard Technologies
  • ETHERNET
• Communication \ with MODBUS RTU
  • Protocol description
  • Technical Data
  • MODBUS Addresses for Processor Modules PM56xx
  • Local Data of the MODBUS Client
  • MODBUS Telegrams
  • Processing Bits
  • Function Block ModRtuMast
• Communication \ with MODBUS TCP/IP
  • Protocol description
  • Technical Data
  • MODBUS Addresses for Processor Modules PM56xx
  • Local data of the MODBUS client
  • MODBUS telegrams
  • Processing Bits
  • Function Block ETHx_MOD_MAST and ModTcpMast
• Fast Counters
  • Fast Counters in AC500 Devices
  • Fast Counters in AC500-eCo (Onboard I/O in PM55x and PM56x)
• Special Function Blocks and Programms
  • Function Block COM_SET_PROT
  • Sending/Receiving Data with SysLibCom Protocol