The 1768-L45S is a controller module from Allen-Bradley. It belongs to the compact GuardLogix line of controllers. It comes with many integrated safety measures. It comes with 3 megabytes of user memory. Thanks to the built-in memory, this controller can execute many standard industrial tasks in minutes, such as automating different machines and different processes. It comes with 1 megabyte of dedicated memory for executing safety tasks. The 1002 safety architecture is incorporated inside this controller. This particular architecture helps with performance-level applications. It is meant to be paired with industrial modules that require the SIL3 safety protocol. 

For communication, the 1768-L45S comes with an integrated RS-232 port. It also has a CompactFlash 1784-CF128 memory module inside it. This controller unit is further compatible with the ControlNet Standard & safety, the DeviceNet safety standard, and the Ethernet/IP safety standard. This controller module can accommodate as many as 3 distributed Input/Output banks and 30 Input/Output modules. This controller can be paired with 4 local 1768 I/O modules, and 30 compact 1769 I/O modules. At 24 volts direct current (DC), the backplane current draw rate for this controller is 2.1 amperes. The power consumption rating for this module is 50.4 watts. The maximum power dissipation rate for this module is 9.5 watts. 

The 1768-L45S has physical dimensions that measure 132 millimeters x 90 millimeters x 122 millimeters. The weight of this module is roughly 0.45 kilograms. For installation, this drive supports both DIN and panel mounting. There are two (2) RS-232 communication ports on this module, each of which supports a data transfer rate of 38.4 kilobytes per second.