3 Product Description
X-DO 24 01
Page 16 of 52
HI 801 019 E Rev. 4.00
3.4.4
System Bus Indicators
The system bus LEDs are labeled
Sys
Bus.
LED
Color
Status
Description
On
Physical and logical connection to the system bus
module in slot 1.
Green
Blinking1
No physical connection to the system bus module in
slot 1.
A
Yellow Blinking1 The physical connection to the system bus module
in slot 1 has been established.
No connection to a (redundant) processor module
running in system operation.
On
Physical and logical connection to the system bus
module in slot 2.
Green
Blinking1
No physical connection to the system bus module in
slot 2.
B
Yellow Blinking1 The physical connection to the system bus module
in slot 2 has been established.
No connection to a (redundant) processor module
running in system operation.
A+B Off Off
Neither physical nor logical connection to the
system bus modules in slot 1 and slot 2.
Table 5:
System Bus Indicators
3.4.5 I/O
Indicators
The LEDs of the I/O indicator are labeled
Channel
.
LED
Color
Status
Description
On
The related channel is active (energized).
Blinking2
The related channel is faulty.
Channel
1…24
Yellow
Off
The related channel is inactive (de-energized).
Blinking2
Field fault on at least one channel, e.g., open-
circuit, short-circuit, over-current, etc.
Field
Red
Off
No field fault displayed!
Table 6:
I/O Indicators