20 Device Description
753-1630 SMI Master Module 230 V AC
Manual
Version 1.2.0 FW/HW Version 02/01
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3.3
Display Elements
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Figure 5: Display Elements
Table 8: Legend for the “Display Elements” Figure
LED Designation
Conditio
n
Function
A Local bus status
Off
Local bus failure:
Not ready for operation or no/faulty
local bus communication
Green
Ready for operation and uninterrupted
local bus communication
B
Undervoltage field
supply / SMI
connection short
circuit
Off
Power supply is sufficient.
Red
Supply voltage is below the required
minimum voltage.
Blinking
Short circuit of connections I+ and I−
C TxD
(data transmission)
Off
No SMI telegram is being sent
currently.
Green
SMI telegram was just sent.
D Digital input
Off
In Low status
Green
In High status
E General error
Off
No error detected.
Red
Controller failure or local bus failure
was detected.
F Operating mode
Off
Normal operation active
Yellow
Energy saving mode active
Blinking
Forced position triggered due to one of
the following events:
- Controller failure
- Local bus failure
- Safety-related signal at the digital
input
G RxD
(data receipt)
Off
No SMI telegram is being received
currently.
Green
SMI telegram was just received.
H Digital output
Off
In Low status
Green
In High status
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