Allen-Bradley has made several different models of PLCs over the years. Here is a breakdown of the still available models and the necessary software:
PLC-5 = RSLogix5
SLC 500 = RSLogix 500
MicroLogix = RSLogix 500 / RSLogix Micro
Logix 5000 = RSLogix 5000
Logix 5000 includes: ControlLogix, CompactLogix, SoftLogix, FlexLogix, DriveLogix
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