Dl205 System Components; Cpus; Bases; I/O Configuration - Automationdirect.com DirectLOGIC DL205 Series User Manual

Chapter 1: Getting Started

DL205 System Components

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The DL205 family is a versatile product line that provides a wide variety of features in an
extremely compact package. The CPUs are small, but offer many instructions normally only
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found in larger, more expensive systems. The modular design also offers more flexibility in the
fast moving industry of control systems. The following is a summary of the major DL205
system components.
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CPUs

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There are four feature-enhanced CPUs in this product line, the DL230, DL240, DL250–1
and DL260. All CPUs include built-in communication ports. Each CPU offers a large
amount of program memory, a substantial instruction set and advanced diagnostics. The
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DL250–1 features drum timers, floating–point math, 4 built-in PID loops with automatic
tuning and 2 bases of local expansion capability.
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The DL260 features ASCII IN/OUT and extended MODBUS communications, table and
trigonometric instructions, 16 PID loops with autotuning and up to 4 bases of local
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expansion. Details of these CPU features and more are covered in Chapter 3, CPU
Specifications and Operation.
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Bases

Four base sizes are available: 3, 4, 6 and 9 slot. The DL205 PLCs use bases that can be
expanded. The part numbers for these bases end with –1. These bases have a connector for
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local expansion located on the right end of the base. They can serve in local, local expansion
and remote I/O configurations. All bases include a built-in power supply. The bases with the
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–1 suffix can replace existing bases without a suffix if expansion is required.

I/O Configuration

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The DL230 and DL240 CPUs can support up to 256 local I/O points. The DL250–1 can
support up to 768 local I/O points with up to two expansion bases. The DL260 can support
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up to 1280 local I/O points with up to four expansion bases. These points can be assigned as
input or output points. The DL240, DL250–1 and DL260 systems can also be expanded by
adding remote I/O points. The DL250–1 and DL260 provide a built–in master for remote
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I/O networks. The I/O configurations are explained in Chapter 4, System Design and
Configuration. I/O Modules
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I/O Modules

The DL205 has some of the most powerful modules in the industry. A complete range of
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discrete modules which support 24 VDC, 110/220 VAC and up to 10A relay outputs (subject
to derating) are offered. The analog modules provide 12 and 16 bit resolution and several
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selections of input and output signal ranges (including bipolar). Several specialty and
communications modules are also available.
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DL205 User Manual, 4th Edition, Rev. B