DL205 Programmable Logic Controller - CPUs

Select one of the links below to view further detail on the various DirectLOGIC 205 PLC line of CPUs:

• D2-260 CPU
• D2-250-1 CPU
• D2-240 CPU
• D2-230 CPU
• WinPLC
• 7 Steps to Specifying a DL205 System

D2-260 CPU

Our most powerful DL205 CPU

The D2-260 CPU provides all the capabilities of the other DL205 CPUs (as well as our D4-450 CPU), plus several additional features rarely found in a PLC of this size. With such an incredible array of features, you may be able to replace PLCs costing hundreds (or thousands) of dollars more. DirectSOFT5™ is used to program the D2-260. If you’re using a handheld programmer, version 2.10 (or higher) of the handheld programmer firmware is required. A few key features of the D2-260 CPU include:

• Local expansion I/O
  The D2-260 supports local expansion up to five total bases (one CPU base and four expansion bases). Expansion bases are commonly used when there are not enough slots available in the PLC CPU base, when the base power budget will be exceeded or when placing an I/O base at a location away from the CPU base, but within the expansion cable limits, if desired. All local and expansion I/O points are updated on every CPU scan. Each local expansion base requires the D2-CM module in the CPU slot. The local CPU base requires the D2-EM Expansion Module, as well as each expansion base.
  
  
• Powerful built-in CPU communications
  The D2-260 offers two communications ports that provide a vast array of communication possibilities. The top RJ-12 RS-232C port can be used for PLC programming, connection to a C-more / C-more Micro or DV-1000 operator interface panel or touchscreen, or as a K-sequence or DirectNET slave. The 15-pin bottom port (port 2) supports RS232C or RS422/RS485. This port offers several different protocol options such as:
  • K-sequence
  • DirectNET Master/Slave
  • MODBUS RTU Master/Slave
  • ASCII In/Out Communications
  
  
  NOTE: Port 2 can also serve as a remote I/O master. The D2-260 supports the Ethernet Communication module and Data Communication Module for additional communications ports.
  
  
• 16 PID* loops with auto-tuning
  The D2-260 CPU can process up to 16 PID loops directly in the CPU. You can select from various control modes including automatic, manual, and cascade control. There are also a wide variety of alarms including Process Variable, Rate of Change, and Deviation. The loop operation parameters (Process Variable, Setpoint, Setpoint Limits, etc.) are stored in V-memory, which allows easy access from operator interfaces or Human Machine Interfaces (HMIs). Setup is accomplished with easy-to-use setup menus and monitoring views in the DirectSOFT5 PLC programming software. The auto tuning feature is easy to use and can reduce setup and maintenance time. Basically, the CPU uses the auto tuning feature to automatically determine near optimum loop settings.
  
  *NOTE: PID (Proportional, integral, derivative) control: Control algorithm that is used to closely control processes such as temperature, mixture, position, and velocity. The proportional portion takes care of the magnitude of the error. The derivative compensates for the rate of error change. The integral takes care of small errors over time.
  
  
• Full array of instructions
  The right instruction can greatly simplify your programming task and can save hours of PLC ladder logic programming time. The D2-260 supports over 225 powerful instructions, such as:
  • Four types of drum sequencers
  • Leading / trailing edge triggered oneshots
  • Bit of word manipulation
  • Floating point conversions
  • Trigonometric functions
  • Table instructions
  • ASCII IN/OUT instructions
  
  
  
• MODBUS RTU instructions
  The D2-260 CPU supports easy-to-use MODBUS Read/Write instructions that expand our existing MODBUS network instruction capabilities. The MRX or MWX instructions allow you to enter native MODBUS addressing in your ladder logic program with no need to perform octal to decimal conversion. We added Function codes 05, 06 and the ability to read Slave Exception Codes. These flexible instructions allow the PLC programmer to select the following parameters within one instruction window:
  • 584/984 or 484 MODBUS data type
  • Slave node (0-247)
  • Function code
  • MODBUS starting master / slave memory address
  • Number of bits
  • Exception code starting address

D2-250-1 CPU

NOTE: The D2-250-1 replaces the D2-250

Our new D2-250-1 CPU replaces the D2-250 CPU. The D2-250-1 offers all the features and functionality of the D2-250 with the addition of local I/O expansion capability. The D2-250-1 offers an incredible array of features at a low cost. Release 2.1 (or higher) of the DirectSOFT™ PLC programming software is required to program the D2-250-1. Release 4.0 (or higher) is required if you intend to use local expansion I/O. If you’re using a handheld programmer, version 2.10 (or higher) of the handheld programmer firmware is required. Following are a few key features of the D2-250-1 CPU:

• Local expansion I/O
  The D2-250-1 supports local expansion up to three total bases (one CPU base and two expansion bases). Expansion bases are commonly used when there are not enough slots available in the CPU base, when the base power budget will be exceeded or when placing an I/O base at a location away from the CPU base, but within the expansion cable limits. All local and expansion I/O points are updated on every CPU scan. Each local expansion base requires the D2-CM module in the CPU slot. The local CPU base requires the D2-EM Expansion Module, as well as each expansion base.
  
  
• Powerful built-in CPU communications
  The D2-250-1 offers two communication ports that provide a vast array of communication possibilities. The top RS232C port is for PLC programming, connection to a C-more / C-more Micro or DV-1000 operator interface panel, or to serve as a DirectNET slave. The 15-pin bottom port (port 2) supports RS232C or RS422. This port offers several different protocol options such as K-sequence, DirectNET master/slave, or MODBUS RTU master/slave. Port 2 can also serve as a remote I/O master. The D2-250 PLC supports the Ethernet Communication Module and Data Communication Module for additional communications ports.
  
  
• Four PID loops with auto-tuning
  The D2-250-1 CPU can process up to 4 PID loops directly in the CPU. You can select from various control modes including automatic, manual, and cascade control. There are a wide variety of alarms including Process Variable, Rate of Change, and Deviation. The loop operation parameters (Process Variable, Setpoint, Setpoint Limits, etc.) are stored in V-memory, which allows easy access from operator interfaces or HMIs. Setup is accomplished with easy-to-use setup menus and monitoring views in DirectSOFT5 programming. The auto tuning feature is easy to use and can reduce setup and maintenance time. Basically, the CPU uses the auto tuning feature to automatically determine near optimum loop settings.
  
  
• Full array of instructions
  The D2-250-1 supports over 160 powerful instructions, such as:
  • Four types of drum sequencers
  • Leading and trailing edge triggered oneshots
  • Bit of word manipulation
  • Floating point conversions
  • 4 PID loops
  
  
  
• On-board memory
  The D2-250-1 has 7.6 K words of flash memory on board for your program plus 7.1 K words of V-memory (data registers). With flash memory, you don’t have to worry about losing the program due to a bad battery. If you have critical data stored in the capacitor-backed V-memory, simply purchase the optional lithium battery (D2-BAT-1) to permanently maintain these parameters.
  
  
• Built-in remote I/O connection
  In addition to providing outstanding communications capabilities, the bottom port on the D2-250-1 PLC can also act as a master for remote I/O networks. If you need extra I/O at a remote distance from the CPU, you can use this port to add up to seven of our remote slave stations.

D2-240 CPU

The D2-240 provides a subset of the D2-250-1's capabilities. If you need a good CPU with multiple communications ports and complex math or PID isn't required, then the D2-240 is the CPU for you!

• Built-in memory
  There is 2.5 K of EEPROM program memory in the D2-240. No additional memory is required. If you have critical data stored in the capacitor-backed V-memory, simply purchase the optional lithium battery (D2-BAT) to permanently maintain these parameters as well.
  
  
• Powerful instructions
  The D2-240 instructions cover most of the capability of our more powerful D2-250-1 and allow you to cover a wide variety of applications. Instructions include boolean logic, data manipulation, integer math, interrupts, subroutines, FOR/NEXT loops, and more.
  
  
• Two built-in RS232C communications ports
  The D2-240 PLC offers two communications ports. The top port can be used for a direct connection to a personal computer for programming, to our handheld programmer, or C-more / C-more Micro or DV-1000 operator interface panels. The bottom port is a slave-only port and supports our DirectNET or K-sequence protocol at speeds up to 19.2 K baud. If you're using an operator interface or plan on connecting the system to a network later on, then you can choose the D2-240. The D2-240 also supports the D2-DCM Data Communications Module and the H2-ECOM Ethernet Communications Module.

D2-230 CPU

The D2-230 is our most economical CPU for the DL205 Programmable Logic Controller product line. If you are looking at the DL205 primarily because of the size or for other reasons that don't require lots of CPU horsepower, then give the D2-230 a try.

• Built-in EEPROM memory
  There is 2.0 K of EEPROM program memory in the D2-230. No additional memory is required. If you have critical data stored in the capacitor-backed V-memory, simply purchase the optional lithium battery (D2-BAT) to permanently maintain these parameters as well.
  
  
• One built-in communications port
  The D2-230 PLC has only one communication port. If you are considering any network connections in the future, you will need the D2-240, D2-250-1, or D2-260 CPU. The extra port on those CPUs may be worth the cost, especially during machine startup or troubleshooting sessions. The D2-230 does not support the Ethernet or Data Communications modules.
  
  
• Basic instruction set
  The D2-230 provides a subset of the D2-240's well-rounded instructions. The D2-230's instructions cover basic boolean and simple integer math.

*What is a WinPLC?

The WinPLC provides a Windows® CE operating system environment in our DL205 CPU hardware. The small size and low cost of the DL205 PLC products is desirable, but the operating systems of the D2-230, 240, 250-1 and 260 CPUs are proprietary (like most PLCs). The WinPLC provides a hybrid PC/PLC solution that brings the best of the PLC and PC control worlds together. The WinPLC module is plugged into the CPU slot of the DL205 base. It uses Windows® CE, a real-time operating system combined with the advantages of open standard software such as OPC, ActiveX and other Microsoft communications tools. The WinPLC offers both deterministic control and open communications. It uses advanced software development tools for control, data management, communication and integration with business systems. The WinPLC system is the best solution if your applications require:

• Complex math
• Heavy serial communications (can use the H2-SERIO module)
• Advanced data manipulation
• Advanced handling of string or array data
• Up to 64 PID loops

NOTE: For more information on the WinPLC products, please select the WinPLC product category listed near the top of the page.

________________________________________________________________________________________________________________ 7 Steps to Specifying a DL205 System

The following 7 steps will help you specify the correct DL205 PLC system for your application. Your first priority when designing a process control system should be safety. Please make sure that all of the automation components in your system will operate within the product’s environmental and operating specifications. Before you begin selecting products for your DL205 PLC system, be sure to evaluate all of your application needs and any future growth potential. A more detailed System Specification Guide for the DL205 is provided in the AutomationDirect product catalog in the DL205 Overview section or you may select the "Technical Info" tab to view the complete "7 Steps" document and other related technical documents.

• STEP 1: Review the DL205 family of products
  The DL205 family offers a wide variety of products. Please review the product offerings, including:
  
  • CPUs
  • PLC programming tools (DirectSoft5 Programming Software or Handheld Programmer)
  • Bases (3, 4, 6 or 9-slot)
  • Local expansion modules
  • Discrete input modules (DC and AC input)
  • Discrete output modules (DC, AC and relay output)
  • Combination discrete modules
  • Analog modules (Analog input, analog ouput, combination analog in/out, temperature input)
  • Communications/networking modules (Ethernet or data communications modules)
  • Remote I/O modules (Ethernet or serial)
  • Specialty modules (Basic CoProcessor, Input Simulator, Counter I/O, Counter Interface)
  • CPU-slot slave controllers (Ethernet Base Controller, DeviceNET slave, Profibus slave, SDS slave)
  • Operator Interfaces (C-more / C-more Micro or DV-1000 and configuration software)
  • Connection systems (DINnector terminal blocks, ZIPLink connection systems and other accessories)
  
  
• STEP 2: Select a CPU, PLC programming tool, and appropriate cables
  The DL205 PLC family offers four CPUs: the D2-260, D2-250-1, D2-240 and D2- 230. The WinPLC, a Windows® CE-based CPU, is also covered in this step. Please take the time to understand the features and specifications of each CPU model (i.e. built-in communications ports protocols, instructions, etc.). To program the DL205 CPUs, choose between the Windows-based DirectSOFT5 PLC programming software and PC cable or a handheld programmer. The WinPLC requires Entivity Studio or Think & Do Live for programming. CPU-slot slave base controllers are also introduced in this step (For further details, refer to the product catalog or select the "Technical Info" tab to view the complete "7 Steps" document and other related technical documents).
  
  
• STEP 3: Determine if additional communication ports are needed
  If your application requires more than the built-in CPU communications ports, then select the H2-ECOM Ethernet Communications Module or the D2-DCM Serial Communications Module. These modules add more ports for networking or connection to an HMI (Human Machine Interface), etc. The H2-SERIO serial communications module can be used with the WinPLC to add more communications ports.
  
  
• STEP 4: Select the appropriate discrete, analog and specialty I/O modules
  Since there are several different types of I/O and speciality modules available for the DL205 PLC system, it is important to review the module specifications in detail when selecting them for your process control system. The hardware specifications for the modules can be reviewed in the AutomationDirect product catalog, or on our Web site by selecting a product category and clicking on the "Technical Info" tab or by selecting the "Products" tab and clicking on the desired Item Code link.
  
  
• STEP 5: Choose an I/O configuration method
  The DL205 PLC products offer several configurations of I/O. Choose among local I/O, local expansion I/O and remote I/O. A DL205 system can be developed using a combination of the configuration arrangements. It is important to understand the octal addressing scheme and I/O module placement restrictions that are described in this step (For further details, refer to the product catalog or select the "Technical Info" tab to view the complete "7 Steps" document and other related technical documents).
  
  
• STEP 6: Check the power budget
  It is very important to verify that the selected CPU and I/O modules will operate within the base power budget. Tables are provided that list the power supplied and consumed by each DL205 PLC device. This step also describes base dimensions and mounting requirements (For further details, refer to the product catalog or select the "Technical Info" tab to view the complete "7 Steps" document and other related technical documents).
  
  
• STEP 7: Place your order!
  Place your order either online at www.automationdirect.com, by calling 1-800-633-0405 or by faxing your order to 1-770-889-7876.

NOTE: The technical specifications for various products and modules can be reviewed in the AutomationDirect product catalog, or on our Web site by selecting a product category and clicking on the "Technical Info" tab or by selecting the "Products" tab and clicking on the desired Item Code link.

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