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SLC System Overview
Product Design
SLC 500 processors are available in a large range of forcible I/O (4096 inputs plus 4096 outputs maximum) and maximum user memory (1K instructions through 64K words). Several modular processors are capable of controlling remotely located I/O. By adding an I/O scanner module, you can use these processors to monitor/control these remotely located I/O AC ross ControlNet, DeviceNet, and Universal Remote I/O links.
The 1746/1747 platform provides a modular-hardware system for maximum flexibility. SLC 500 processors are single-slot modules that you place into the left-most slot of a 1746 I/O chassis. For 1746 I/O in a location remote from the processor, the I/O adapter is a single-slot module that you place into the left-most slot of a 1746 I/O chassis.
The 1746 I/O chassis are built for back-panel mounting. The 1746 I/O chassis is available in sizes of 4, 7, 10, or 13 module slots. The 1746 I/O modules are available in densities of a maximum of 32 I/O per module.
You can configure a system with one, two, or three local chassis, for a total of 30 local I/O or communication modules maximum. You connect multiple local chassis together with chassis interconnect cables to extend the backplane signal lines from one chassis to another. This same 30-I/O-module limit applies to a chassis remote from the processor with an I/O adapter module in the first slot. Modules slide easily into chassis slots; no tools are required for module installation.
For many modules, because you wire to a removable terminal block that unplugs from the module, you do not need to disconnect wiring to replace an I/O module.