ControlLogix
​PLC Modules & Parts
ControlLogix (Largest)🔴 High-end, enterprise-level control, most powerful.
  • Families: ControlLogix 5560, 5570, 5580
  • Typical Uses:
    • Large factories
    • Complex process plants
    • Batch systems
    • High availability / redundant systems
  • Key Features:
    • Full modular rack
    • Large memory and processing power
    • Supports thousands of I/O
    • Advanced networking (Ethernet/IP, ControlNet, etc.)
    • Safety controllers available (GuardLogix)
Example part numbers:
  • 1756-L73 (ControlLogix 5570 CPU)
  • 1756-L81E (ControlLogix 5580 CPU)
📏 Physical Size:
Largest footprint — full rack with CPU, communication cards, power supplies, etc.
ControlLogix Standard Controllers:
  • 5560 Series (Legacy)
    • 1756-L61, 1756-L62, 1756-L63, 1756-L63XT, 1756-L64, 1756-L65
  • 5570 Series
    • 1756-L71, 1756-L71K, 1756-L72, 1756-L72K, 1756-L73, 1756-L73K, 1756-L73XT, 1756-L74, 1756-L74K, 1756-L75, 1756-L75K 
  • 5580 Series
    • Standard (Logix 5580):
      • 1756-L81E, 1756-L81EK
      • 1756-L82E, 1756-L82EK
      • 1756-L83E, 1756-L83EK
      • 1756-L84E, 1756-L84EK
      • 1756-L85E, 1756-L85EK
    • No Stored Energy (NSE) Variants:
      • 1756-L81E-NSE
      • 1756-L82E-NSE
      • 1756-L83E-NSE
      • 1756-L84E-NSE
      • 1756-L85E-NSE
    • Extreme Temperature (XT) Models:
      • 1756-L81EXT, 1756-L82EXT, 1756-L83EXT, 1756-L84EXT, 1756-L85EXT
    • Process Versions (EP):
      • 1756-L81EP, 1756-L83EP, 1756-L85EP

⏱ GuardLogix (Safety) Controllers
  • GuardLogix standard and rugged safety-rated variants include:
    • 1756-L61S, 1756-L62S, 1756-L63S, 1756-L71S, 1756-L71SK, 1756-L72S, 1756-L72SK
    • 1756-L73S, 1756-L73SK, 1756-L7SP, 1756-L7SPK, 1756-L73SXT
    • (Plus redundancy into 80 series) 1756-L81ES, 1756-L81ESK, 1756-L82ES, 1756-L82ESK, 1756-L83ES, 1756-L83ESK,
      1756-L84ES, 1756-L84ESK, 1756-L8SP, 1756-L8SPK

Armor Series (Harsh Environment)
  • Designed for wash-down or dusty industrial environments:
    • Armor ControlLogix: 1756-L72EROM, 1756-L73EROM
    • Armor GuardLogix: 1756-L72EROMS, 1756-L73EROMS

Redundancy Modules
  • For high-availability ControlLogix redundant systems:
    • 1756-RM2, 1756-RM2K, 1756-RM2XT
      ​
Summary Table
​
Category

5560 Series

5570 Series

5580 Standard

5580 NSE

5580 XT

5580 EP (Process)

GuardLogix

Armor Series

Redundancy Modules
Part Numbers

L61, L62, L63, L63XT, L64, L65

L71, L71K, L72, L72K, L73, L73K, L73XT, L74, L74K, L75, L75K

L81E/EK, L82E/EK, L83E/EK, L84E/EK, L85E/EK

L81E-NSE, L82E-NSE, L83E-NSE, L84E-NSE, L85E-NSE

L81EXT, L82EXT, L83EXT, L84EXT, L85EXT

L81EP, L83EP, L85EP

L61S, L62S, L63S, L71S/SK, L72S/SK, L73S/SK, L7SP/SPK, L73SXT, L81ES/SK, L82ES/SK, L83ES/SK, L84ES/SK, L8SP/SPK

L72EROM, L73EROM, L72EROMS, L73EROMS

RM2, RM2K, RM2XT