DL205 User Manual, 4th Edition, Rev. D
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Chapter 3: CPU Specifications and Operations
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CPU Setup Information
Even if you have years of experience using PLCs, there are a few tasks you need to do before
you can start entering programs. This section includes some basic tasks, such as changing the
CPU mode, but it also includes some tasks that you may never have to use. Here’s a brief list
of the items that are discussed:
• Using auxiliary functions
• Clearing the program (and other memory areas)
• How to initialize system memory
• Setting retentive memory ranges
The following paragraphs provide the setup information necessary to ready the CPU for
programming, including set-up instructions for either type of programming device you are
using. The D2–HPP Handheld Programmer Manual provides the Handheld keystrokes
required to perform all of these operations. The DirectSOFT Manual provides a description of
the menus and keystrokes required to perform the setup procedures via DirectSOFT.
Port 1
Port 2
CH1
CH2
CH3
CH4
RUN
TERM
RUN
CPU
PWR
BATT
PORT 1
DL240
CPU
RUN
CPUBATT
PORT1
DL250-1
Port 1
Port 2
Status Indicators
Status Indicators
Mode Switch
Mode Switch
Analog
Adjustments
Battery Slot
DL230
DL260
PWR
PORT?2
CPU