Siemens DI 16x24VDC HF, Equipment Manual

Page: 27 / 46

7.2.3 Channel status / fault LEDs
Definition
The channel status and channel fault LEDs provide you information about the status and faults
of the channels.
Description
Regardless of the parameter assignment, the green LED channel status shows the signal level at
the input terminal. It lights up starting at approximately 10 V of terminal current.
The red channel fault LED lights up when a channel diagnostics is active for an enabled channel.
The channel status and channel fault LEDs indicate the following:
LED channel status LED channel error Meaning
Off Off
Process signal = 0 and
• Channel disabled or module switched off
• Channel enabled and no channel diagnostics pending
• Module diagnostics pending
On Off
Process signal = 1 and
• Channel disabled or module switched off
• Channel enabled and no channel diagnostics pending
• Module diagnostics pending
Off On
Process signal = 0 and
• Channel enabled and channel diagnostics pending
On On
Process signal = 1 and
• Channel enabled and channel diagnostics pending
7.2.4 PWR LED
Definition
The PWR LED provides you status information about supply voltage L+.
Description
The PWR LED indicates the following status:
PWR LED Meaning
Off
Supply voltage L+ missing.
On
Supply voltage L+ present.
Displays and interrupts
7.2 LEDs
DI 16x24VDC HA
Equipment Manual, 10/2020, A5E39265608-AD
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