ABB AC500 PLC, Hardware Manual, Page: 87 / 1315

The memory card can be used
● to read and write user files
● for firmware updates
Detailed information can be found in the System Technology chapter .
AC500 processor modules can be operated with and without memory cards. The processor
module uses a standard file system (FAT; filenames stored in 8.3 format, on memory card). This
allows standard card readers to read and write the memory cards (MC502).
Only genuine MC502 memory cards are supported.
For more information on the technical data, handling instructions and the insertion/replacement
of the memory card, please refer to the chapter Memory Card MC502 .
1.2.2.2.5 Operating Elements on the Front Panel
Table 16: Meaning of the status LEDs (left part)
LED Color Status Description
PWR *) Green On Power supply available
Blinking ---
Off Power supply not available or defective
hardware
RDY *) Yellow On Boot procedure
Blinking Boot failure
Off ---
RUN *) Green On Communication module is operational
Blinking ---
Off Communication module is not operational
STA1 *) Red On Depending on used fieldbus
Blinking Depending on used fieldbus
Off Depending on used fieldbus
Green On Depending on used fieldbus
Blinking Depending on used fieldbus
Off Depending on used fieldbus
STA2 *) Red On Depending on used fieldbus
Blinking Depending on used fieldbus
Off Depending on used fieldbus
Green On Depending on used fieldbus
Blinking Depending on used fieldbus
Off Depending on used fieldbus
*) These LEDs exist twice.
Status LEDs
Device Specifications
Processor Modules > AC500 (Standard)
2019/04/17 3ADR010121, 13, en_US 87