Status Indicators; Mode Switch Functions - Automationdirect.com DL05 User Manual

Chapter 3: CPU Specifications and Operation Chapter 3: CPU Specifications and Operation
1 1
2 2
3 3
4 4
5 5
6 6

Status Indicators

The status indicator LEDs on the CPU front panels have specific functions which can help in
7 7
programming and troubleshooting.
Indicator
8 8
PWR
9 9
RUN
10 10
CPU
11 11
TX1
12 12
RX1
13 13
TX2
14 14
RX2
A a

Mode Switch Functions

The mode switch on the DL05 PLC provides positions for enabling and disabling program
B b
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 5
C c
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
D D
programming or monitoring device.
NOTE: If the DL05 is switched to the RUN Mode without a program in the PLC, the PLC will produce
a FATAL ERROR which can be cleared by cycling power to the PLC.
3-6 3-6 DL05 Micro PLC User Manual, 6th Edition, Rev. D DL05 Micro PLC User Manual, 6th Edition, Rev. C
Mode Switch
Status
ON
OFF
ON
OFF
Blinking
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Status
Indicators
Meaning
Power good
Power failure
CPU is in Run Mode
CPU is in Stop or program Mode
CPU is in upgrade Mode
CPU self diagnostics error
CPU self diagnostics good
Data is being transmitted by the CPU - Port 1
No data is being transmitted by the CPU - Port 1
Data is being received by the CPU - Port 1
No data is being received by the CPU - Port 1
Data is being transmitted by the CPU - Port 2
No data is being transmitted by the CPU - Port 2
Data is being received by the CPU - Port 2
No data is being received by the CPU - Port 2