Selecting Modular Processors for SLC 500

SLC 500 modular processors are designed to meet a wide range of applications, from small stand-alone to large distributed systems and from simple to complex applications.

Processor Features
Memory size — The SLC 500 modular processors memory is user
configurable for either data storage or program storage. Memory
size ranges from 1K to 64K.

I/O points — The SLC 5/01 processor supports addressing of up to
3940 I/O. The SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05
processors support addressing of 4096 I/O. The SLC 500 modular
processors are supported by over 60 different I/O modules including
digital, analog, and intelligent I/O.

Performance — The SLC 500 modular processors are designed
with throughput performance in mind. The program scan time for a
typical instruction mix ranges from 0.9 ms/K to 8.0 ms/K depending
on the processor. I/O scan times range from 0.25 ms to 2.6 ms
depending on the processor.

Advanced instruction support — The instructions available
depends on the processor used. The following table lists the type of
instruction support offered by the SLC 500 modular processors.

Allen Bradley Device Network

A Device network connects plant floor devices directly to the control system (e.g., SLC 500 controller) reducing the number of I/O interfaces and wiring associated with a typical hard-wired solution.The DeviceNet communication network is a completely open Device network and has the support of industry’s leading sensor, actuator,
and control manufacturers.

In a typical configuration, the 1747-SDN DeviceNet Scanner acts as an interface between DeviceNet devices and the SLC 5/02, SLC 5/03, SLC 5/04, and SLC 5/05 processors. The scanner communicates with DeviceNet devices over the network to:
• Read inputs from a device
• Write outputs to a device
• Download configuration data
• Monitor a device’s operational status

The scanner communicates with the SLC 500 processors to exchange I/O data. Information exchanged includes:
• Device I/O data
• Status information
• Configuration data

A single scanner (master) can communicate with up to 63 nodes (slaves) on DeviceNet. The SLC system supports multiple scanners if more devices are required to be controlled by a single SLC 500 processor.

DeviceNet Network Length

The DeviceNet network lengths are listed below.

PLC Address

How to read Basic PLC address
.

EX. For Allen Bradley SLC 500

Input and Output module.

I = Module Type ( I for Input, O for Output )
3 = Slot Number (1-30 )
10 = Terminal Number

Ex.1

	Address = I :3/0
I = Input Type
3 = Slot Number ( Start 0 at CPU )
0 = Terminal Number at Input module.