
Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
103
Chapter 7 Status Indicators and Troubleshooting
Optical Push Button
The optical push button is on the front window next to the status indicators.
For activation, place your finger on the square (see
). It is operated
with infrared light and can be used to:
•
Confirm a new configuration (see
•
Switch on/off the integrated laser alignments system (450L-E safety light
curtain only) (
).
•
Start power off/on cycle if there is a lockout. For recycling, the optical
push button must be pressed between 10…20 seconds. Otherwise, the
recycle command is ignored (see
•
Communication with the Optical Interface Device (see
).
Figure 82 - Optical Push Button
Troubleshoot
Status Indicator Error Display
If the STS status indicator is red, blinks red on/off, or blinks green, an error
occurred which stops the system from working in normal operation.
Figure 83 - Status Indicator
Error types are differentiated according to
Errors can be caused externally (STS = red on/off blinking) and internally
(STS = red on). Examples of external recoverable errors include ambient light
and/or Start button fault.
If there is an error, the second status indicator provides more information
about the root cause (
).
The timing of the status indicator blinking defines a frequency and a duty
cycle. The frequency defines one sequence of on and off, as a default frequency
1 Hz is used if not otherwise mentioned. The duty cycle defines the ratio of the
on duration and the off duration of the status indicator. If not otherwise
mentioned, the default value for the duty cycle is 50:50, meaning 50% on, 50%
off.
Table 55 - Error Types
Number
STS Code
Error Type
1
Red on
Internal error
2
Red/OFF blinking
External error
3
Green/OFF blinking
Invalid DIP switch settings
4
Green/Red blinking
Configuration changed
ATTENTION:
To indicate if a system is in the configuration mode, the STS
status indicator blinks alternately red/green (50:50; 1 Hz). The configuration
mode is not an error, but indicates that the DIP switch configuration and/ or
plug-in was changed and must be confirmed. For normal operation, the
configuration must be confirmed first. This procedure is described in