CPU Specifications
and Operation
4–6
CPU Specifications and Operation
Status Indicators
Mode Switch
The status indicator LEDs on the CPU front panels have specific functions which can
help in programming and troubleshooting.
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
CPU
ON
CPU self diagnostics error
OFF
CPU self diagnostics good
TX1
ON
Data is being transmitted by the CPU - Port 1
OFF
No data is being transmitted by the CPU - Port 1
RX1
ON
Data is being received by the CPU - Port 1
OFF
No data is being received by the CPU - Port 1
TX2
ON
Data is being transmitted by the CPU - Port 2
OFF
No data is being transmitted by the CPU - Port 2
RX2
ON
Data is being received by the CPU - Port 2
OFF
No data is being received by the CPU - Port 2
The mode switch on the DL05 PLC 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,
Direct
SOFT 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.
Status Indicators
Mode Switch
Functions
Содержание DL05
Страница 1: ...DL05 User Manual Automationdirect com ...
Страница 2: ...DL05 User Manual Automationdirect com ...
Страница 436: ...1B DL05 Error Codes In This Appendix Ċ Error Code Table ...
Страница 443: ...1C Instruction Execution Times In This Appendix Ċ Introduction Ċ Instruction Execution Times ...
Страница 459: ...1D Special Relays In This Appendix Ċ DL05 PLC Special Relays ...
Страница 464: ...1E DL05 Product Weights In This Appendix Ċ Product Weight Table ...
Страница 466: ...1F European Union Directives CE In This Appendix Ċ European Union EU Directives Ċ Basic EMC Installation Guidelines ...