The 1756-L73S controller has 8MB of user memory, 4MB of secure memory, and 0.98MB of I / O memory.
The 1756-L73S can support 128,000 digital I / O and 4000 analog I / O. It draws 5mA at 1.2V DC and 800mA at 5.1V DC. The 1756-L73S consumes 2.5W and dissipates 8.5 BTU / hr. The 1756-L73S weighs 0.55 pounds and has a basic insulation isolation voltage of 30V (continuous).
The 1756-L73S can be installed in any slot of the ControlLogix 1756 rack, or multiple controllers can be installed in the same rack. For secure communication, it uses ControlNet, DeviceNet or EtherNet / IP networks. It is programmed with RSLogix 5000 software with relay ladder logic to perform safety tasks.
The 1756-L73S controller can control or monitor I / O through the backplane or through an I / O link. For controller diagnostics, it has a front display that provides runtime information. It uses an energy storage module, which means no lithium battery is needed. A 1 GB (1784-SD1) secure digital card is pre-installed and can be expanded to 2 GB (1784-SD2) as an optional non-volatile storage.
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