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.
6ES7400-1TA11-0AA0 - Siemens
SIMATIC S7-400, UR1 RACK ALU, CENTRALIZED AND DISTRIBUTED with 18 SLOTS, 2 REDUNDANT PS PLUGGABLE..
A1S55B-S1 - Mitsubishi
Melsec AnS/QnAS Melsex AnS/QnAS 5 I/O Slot Extension Base Unit..
A1S58B-S1 - Mitsubishi
Melsex AnS/QnAS Melsex AnS/QnAS 8 I/O Slot Extension Base Unit..
1794-TB3S - Allen-Bradley
ALLEN BRADLEY 1794-TB3S TERMINAL BASE FLEX I/O 16 I/O TERMINALS 18 COMMON TERMINALS 18 +VOLTAGE ..
















