AutomationDirect DL205 User Manual

DL205 User Manual, 4th Edition, Rev. D
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Chapter 3: CPU Specifications and Operations
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Status Indicators
The status indicator LEDs on the CPU front panels have specific functions that can help in
programming and troubleshooting.
Mode Switch Functions
The mode switch on the DL240, DL250–1 and DL260 CPUs provides positions for enabling
and disabling program changes in the CPU. Unless the mode switch is in the TERM position,
RUN and STOP mode changes will not be allowed by any interface device, (Handheld
Programmer, DirectSOFT programing package or operator interface). Programs may be
viewed or monitored but no changes may be made. If the switch is in the TERM position and
no program password is in effect, all operating modes as well as program access will be allowed
through the connected programming or monitoring device.
The CPU mode can be changed in two ways:
• Use the CPU mode switch to select the operating mode.
• Place the CPU mode switch in the TERM position and use a programming device to change
operating modes. In this position, you can change between Run and Program modes.
NOTE: If the PLC is switched to the RUN Mode without a program in the CPU, the CPU will produce a
FATAL ERROR which can be cleared by cycling the power to the PLC.
Mode Switch Position CPU Action
RUN (Run Program)
CPU is forced into the RUN mode if no errors are encountered. No
changes are allowed by the attached programming/monitoring device.
TERM (Terminal)
RUN, PROGRAM and the TEST modes are available. Mode and
program changes are allowed by the programming/monitoring device.
STOP (DL250–1 and DL260 only Stop Program)
CPU is forced into the STOP mode. No changes are allowed by the
programming/monitoring device.
Indicator Status Meaning
PWR
ON Power good
OFF Power failure
RUN
ON CPU is in Run Mode
OFF CPU is in Stop or Program Mode
Blinking CPU is in Firmware Upgrade Mode
CPU
ON CPU self diagnostics error
OFF CPU self diagnostics good
BATT
ON
Low battery voltage (only with System
Memory bit B7633.12 set)
OFF CPU battery voltage is good or disabled

AutomationDirect DL205 Specifications

General

Brand	AutomationDirect
Model	DL205
Category	Controller
Language	English