Glossary - ABB AC500 V3 System Manual

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15 Glossary

AC500 Standard PLCs
AC500-eCo Compact PLCs
AC500-S Safety PLCs
AC500-S IEC 61131-3 editor, integrated in engineering suite Automation Builder
Program-
ming Tool
AC500-S- Safety PLCs suitable for extreme environmental conditions
XC
AC500 V2 Range of AC500 and AC500-eCo CPUs
AC500 V3 Range of AC500 and AC500-eCo CPUs
AC500-XC Standard PLCs suitable for extreme environmental conditions
Alarm Diagnosis message which must be acknowledged by the user. The alarm will continue
to be displayed even if the issue has been resolved in the meantime until it is acknowl-
edged.
Automation Engineering suite for configuration and programming of all PLCs
Builder
Cold start Note: The AC500-eCo V3 does not use a battery for buffering the operand areas speci-
fied below, hence the "cold start" mode does not exist in this product.
● A cold start is performed by switching power OFF/ON if no battery is connected.
● All RAM memory modules are checked and erased.
● If no user program is stored in the Flash EPROM, the default values (as set on
delivery) are applied to the interfaces.
● If there is a user program stored in the Flash EPROM, it is loaded into RAM.
● The default operating modes set by the PLC configuration are applied.
CP600 Control panels for application visualizations
Data buf- ● Data buffering, i.e., maintaining data after power ON/OFF, is only possible, if a battery
fering is connected for AC500 CPU and the buffering will take place in FLASH with AC500-
eCo V3 CPU. The following data can be buffered completely or in parts:
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● In order to buffer particular data, the data must be excluded from the initialization
process.
Download ● Download means loading the complete user program into the PLC's RAM. This
process is started by selecting the menu item "Online/Download" in the programming
system or after confirming a corresponding system message when switching to online
mode (menu item "Online/Login").
● Execution of the user program is stopped.
● In order to store the user program to the Flash memory, the menu item "Online/Create
boot project" must be called after downloading the program.
● Variables are set to their initialization values according to the initialization table.
● RETAIN variables can have wrong values as they can be allocated to other memory
addresses in the new project!
● A download is forced by the following:
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2023/03/03
Data in the addressable flag area (%M area)
RETAIN variable
PERSISTENT variable (number is limited, no structured variables)
PERSISTENT area (%R area)
changed PLC configuration
changed task configuration
changed library management
changed compile-specific settings (segment sizes)
execution of the commands "Project/Clean all" and "Project/Rebuild All".
3ADR011074, 1, en_US
Glossary
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