Parameter Range Default Comment
Alternatively, you can start the lamp test from the display unit (Tools >
Advanced > Lamp test) or a digital input (see above).
Duration 1 s to 1 h 18 s The time for the lamp test.
Color cycle
time
1 s to 1 h 3 s
The time that each colour is lit. The colour cycle is green, yellow, red. The
color cycle repeats for the duration of the lamp test.
For the default settings, the lamp test will cycle through all the colours twice.
More information
See Tools, Lamp test in the Operator's manual for information on starting the lamp test from the display unit.
INFO
To identify a controller rack, use the Identify function.
More information
See Tools, Communication in the Operator's manual and the PICUS manual for information on the Identify function.
18.4.2 Alive
To confirm that the controller is operational, a digital output can be configured to activate for a specified amount of time in a time
period. If the signal does not repeat within the defined time period, then the controller is no longer operational.
Outputs
Assign the outputs under Configure > Input/output. Select the hardware module, then select the output to configure.
Table 18.15
Optional inputs for the lamp test
Function I/O Type Details
Local > Alive >
Alive
Digital
output
Pulse
The output is set to high for the Duty cycle time each Period.
For example, if the Duty cycle is set to 50 % and the Period is set to 2 s, then the output
is high for 1 s and low for 1 s. This signal repeats while the controller is operational.
Configure the parameters under Configure > Parameters > Local > Alive > Alive configuration.
Table 18.16
Alive parameters
Parameter Range Default Comment
Duty cycle 0 to 100 % 50 %
The percentage of the Period that the signal is high.
If the Duty cycle is set to 0 %, then the I/O output is always low.
If the Duty cycle is set to 100 %, the output is always high.
Period 0.1 s to 60 s 2 s The time between the start of a high signal to the start of the next high signal.
18.5 Change controller type
18.5.1 Introduction
You can change the type of controller directly with the display unit.
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