SEL-3573 and SEL-3555 Comparison Chart

SEL-3573 Station PDCSEL-3555 Real-Time Automation Controller (RTAC)
Number of Inputs120100
Number of Outputs10100
ArchivingYesYes (with DDR extension)
Data RatesUp to 240 messages per secondUp to 240 messages per second
ControlNoYes
Input FormatIEEE C37.118IEEE C37.118DNP3ModbusSEL Fast Message
Output FormatIEEE C37.118 IEEE C37.118DNP3ModbusSEL Mirrored Bits communicationsSEL Fast Message
PlatformHardwareHardware
Selectable OutputsYesYes
Multiple Input RatesYesNo