The Allen-Bradley 1747-L552 is a SLC 500 slc 5/05 Processor. This slc 5/05 Processor has 4096 Inputs and 4096 Outputs with 480 Analog I/O. Additionally, this module has 32,000 Words User Memory and Ethernet, RS-232 Communication.
 

The Allen-Bradley 1747-L552 is an SLC 500 modular processor. An SLC 5/05 processor, it has a maximum user memory of 32K words, with 28K words for the data or program and 4K words for the data only. The processor also has an absolute maximum number of I/O at 4096 each for both inputs and outputs. It also has a maximum local analog of 480. One hundred and seven programming instructions, as well as three chassis and thirty slots are available with this processor.

This processor has a maximum current of 1A at 5V DC and 0A at 24V DC. It comes with a typical program scan time of 0.9 ms/K, an I/O scan time of 0.225 ms, and an XIC bit execution of 0.37 µs. Depending on the power supply loading, this processor has a program scan hold-up time of 20 ms to 3s after a loss of power. It has an operating vibration of 0.015 inches, peak-to-peak displacement at 5-57 Hz, and 2.5 g acceleration at 57-2000 Hz. This processor also has an operating shock of 30 g and a non-condensing relative humidity of 5-95%. The operating temperature range of this processor is 0-60 ËšC and the storage temperature range is -40-85 ËšC.

The only compatible memory module for this processor is the M13 for the Series C OS501 or higher firmware version. Power must be turned off when adding or removing a module. Status LEDs are available for this processor and these let you monitor its current state. The 1747-L552 processor has an open-type enclosure and is mounted via a chassis. The entire processor measures 145 x 35 x 142 millimeters.

The EtherNet connection of this processor is BOOTP enabled and it supports up to 48 incoming or outgoing connections. You can also configure the processor manually using the RSLogix 500 programming software, aside from a BOOTP/DHCP request. Do note that outgoing connections can only establish one connection per destination node. Multiple MSG instructions will share the same connection if they use the same destination node. This processor also has an RS-232 port and a flash backup memory.

It has a user-replaceable lithium battery that lasts an average of two years. The 1747-L552 processor has a capacitor and this lets the processor run for at least 30 minutes using the battery back-up while the battery itself has been disconnected. The battery must be connected to the processor within 30 minutes to avoid losing data in the RAM.