Rack or Chassis
A chassis is the physical frame or structure of an automobile, an airplane, a desktop computer, or other multi-component device.
A Rack is the framework, typically with rails, bars, hooks, or pegs, for holding or storing things.
CVM1-BI114 - Omron
Expansion I/O backplane, 11 slots (must be connected directly to CVM1 CPU backplane)..
CVM1-BI064 - Omron
Expansion I/O backplane, 6 slots (must be connected directly to CVM1 CPU backplane)..
CS1W-IC102 - Omron
Expansion I/O control unit, to connect CS1 CPU Rack to Long-Distance Expansion Racks (50m max.)..
CS1W-II102 - Omron
Expansion I/O interface unit, to connect Long-Distance Expansion Racks (CS1W-BIxx2) to CS1 CPU Rack ..
CPM1A-20EDT - Omron
Expansion unit, 12x 24 VDC inputs, 8x transistor outputs NPN 0.3A..
CPM1A-20EDT1 - Omron
Expansion unit, 12x 24 VDC inputs, 8x transistor outputs PNP 0.3A..
CPM2C-24EDT1M - Omron
Expansion unit, 16x 24 VDC inputs, 8x transistor outputs PNP 0.3A, MIL Connectors..
CPM1A-40EDT - Omron
Expansion unit, 24x 24 VDC inputs, 16x transistor outputs, 4.5 to 30 VDC, NPN 0.3A..