The Status LED on the front of the automation devices changes color and flashes to indicate the status of the device.
The remaining LEDs on the front differ in number and meaning for the different devices and are explained in the sections about the specific device.
The automation server Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK |
Green, flashing (~1 Hz) |
Device restarting, wait |
Green, flashing (~10 Hz) |
Device shutting down |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/green, flashing (~1 Hz) |
Device firmware upgrade (DFU) mode or firmware being downloaded in DFU mode |
No light |
No input power |
The Central IO module Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Online and configured (at least one channel/point downloaded successfully) |
Green, constant Red, flashing (for 100 ms every 2 s) |
Online and configured Disabled Hand-Off-Auto (HOA) override switches Applies only to Central IO modules with HOA override switches and with manufacturing date earlier than 2021-W26 and upgraded with firmware version 2.017 or later. For more information, see Important Information on Central IO Modules with Manufacturing Date Earlier Than 2021-W26 . |
Green, flashing (200 ms ON, 200 ms OFF) |
Online and unconfigured (physical module that either matches/mismatches logical module) |
Green, slow flashing (approximately every 3 s) |
Low power mode (saves energy) |
Red, constant |
Error requiring attention (for example, the input voltage is too low) |
Red, flashing (100 ms ON, 100 ms OFF) |
Offline with respect to the automation server (both configured and unconfigured modules) |
Red/Green, flashing (green 100 ms, red 100 ms) |
Bootloader mode (downloading data) |
No light |
No input power |
The PS-24V power supply Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Output voltage and load OK |
Red/green, flashing |
Output slightly overloaded |
Red, constant |
Output overloaded |
No light |
No input power |
The MP controller Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK MP controller firmware application running |
Green, flashing (~1 Hz) |
Device restarting, wait MP controller firmware application running |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/green, flashing (~1 Hz) |
MP controller I/O board receiving software upgrade, wait Do not interrupt power to the controller. For more information, see the following Important note. |
Amber, constant |
MP controller firmware boot applet running |
Amber, flash |
Device restarting, wait MP controller firmware boot applet started |
Amber/green, flashing (~1 Hz) |
MP controller firmware is being upgraded. It is typically the firmware main application, but it can also be a boot applet. |
Avoid power interruptions to the device during the brief period when the Status LED is flashing red and green. An interruption causes problems with the I/O processor upgrade and can result in corrupt firmware. You can view the evidence of a corrupt processor when the device reports itself as an “MP-C-15A.” A corrupt I/O processor can lead to the loss of the reset button and/or I/O functionality, as well as the inability to upgrade the I/O processor and/or the device.
The IP-IO module Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK IP-IO module firmware application running |
Green, flashing (~1 Hz) |
Device restarting, wait IP-IO module firmware application running |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/green, flashing (~1 Hz) |
IP-IO module I/O board receiving software upgrade, wait Do not interrupt power to the I/O module. For more information, see the following Important note. |
Amber, constant |
IP-IO module firmware boot applet running |
Amber, flash |
Device restarting, wait IP-IO module firmware boot applet started |
Amber/green, flashing (~1 Hz) |
IP-IO module firmware is being upgraded. It is typically the firmware main application, but it can also be a boot applet. |
Avoid power interruptions to the device during the brief period when the Status LED is flashing red and green. An interruption causes problems with the I/O processor upgrade and can result in corrupt firmware. You can view the evidence of a corrupt processor when the device reports itself as an “MP-C-15A.” A corrupt I/O processor can lead to the loss of the reset button and/or I/O functionality, as well as the inability to upgrade the I/O processor and/or the device.
The RP controller Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK RP controller firmware application running No Bluetooth activity a |
Blue, constant a |
Normal operation, status OK RP controller firmware application running Bluetooth connection is active |
Green 3 seconds, blue 1 second |
Normal operation, status OK RP controller firmware application running Bluetooth advertising is active a |
Green, flashing (~1 Hz) |
Device restarting, wait RP controller firmware application running |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/blue, flashing (~1 Hz) a |
Bluetooth radio microcontroller firmware is being upgraded |
Red/green, flashing (~1 Hz) |
RP I/O board receiving software upgrade, wait Do not interrupt power to the controller. For more information, see the following Important note. |
Amber, constant |
RP controller firmware boot applet running |
Amber, flash |
Device restarting, wait RP controller firmware boot applet started |
Amber/green, flashing (~1 Hz) |
RP controller firmware is being upgraded. It is typically the firmware main application, but it can also be a boot applet. |
White, transient |
Device starting, wait |
White, constant |
RP controller firmware not running, attention required (contact product support) |
Avoid power interruptions to the device during the brief period when the Status LED is flashing red and green. An interruption causes problems with the I/O processor upgrade and can result in corrupt firmware. You can view the evidence of a corrupt processor when the device reports itself as an “MP-C-15A.” A corrupt I/O processor can lead to the loss of the reset button and/or I/O functionality, as well as the inability to upgrade the I/O processor and/or the device.
The RP-IO module Status LED indicates the condition of the device.
LED Patterns |
Condition |
Green, constant |
Normal operation, status OK RP-IO module firmware application running |
Green 3 seconds, blue 1 second |
Normal operation, status OK RP-IO module firmware application running |
Green, flashing (~1 Hz) |
Device restarting, wait RP-IO module firmware application running |
Red, constant |
Detected error, attention required |
Red, flashing (~1 Hz) |
Device operates, but a problem needs attention |
Red/green, flashing (~1 Hz) |
RP I/O board receiving software upgrade, wait Do not interrupt power to the controller. For more information, see the following Important note. |
Amber, constant |
RP-IO module firmware boot applet running |
Amber, flash |
Device restarting, wait RP-IO module firmware boot applet started |
Amber/green, flashing (~1 Hz) |
RP-IO module firmware is being upgraded. It is typically the firmware main application, but it can also be a boot applet. |
White, transient |
Device starting, wait |
White, constant |
RP-IO module firmware not running, attention required (contact product support) |
Avoid power interruptions to the device during the brief period when the Status LED is flashing red and green. An interruption causes problems with the I/O processor upgrade and can result in corrupt firmware. You can view the evidence of a corrupt processor when the device reports itself as an “MP-C-15A.” A corrupt I/O processor can lead to the loss of the reset button and/or I/O functionality, as well as the inability to upgrade the I/O processor and/or the device.