IB IL 24 MUX MA-PAC
58
PHOENIX CONTACT
5981_en_06
8.4
Diagnostic indicators
The five LEDs on the left of the field multiplexer have the following meanings (see also
Section “Diagnostic indicators” on page 17):
8.4.1
Error causes and remedies
The LEDs on the field multiplexer do not light up or flash alone, but always together with
others. Each combination indicates a specific malfunction, which can then be localized and
rectified.
The various LED combinations are described in Table 8-3. The symbols used have the
following meanings:
Table 8-2
Diagnostic LEDs on the field multiplexer
LED
Color
Meaning of the LED
UL
Green
U
Logic
(Field multiplexer supply, communications power and interface
supply)
ST
Red
St
op (Field multiplexer is in the stop state)
CE
Red
C
onfiguration
E
rror
RE
Red
R
emote Bus
E
rror
LE
Red
L
ocal Bus
E
rror
(Error on the local bus of this field multiplexer station, e.g., a faulty
I/O terminal)
Symbol
Meaning
○
LED OFF
⊙
LED flashing
●
LED ON
Table 8-3
Possible LED combinations
No.
UL
ST
RE
LE
CE
Error
Remedy
1)
○
○
○
○
○
Logic and interface power not present
Check field multiplexer supply U
MUX
2)
⊙
●
○
○
○
Interface supply not present and/or hard-
ware faulty
Send field multiplexer for service
3)
●
●
●
○
○
–
Error on remote bus
–
"Master/slave" or "copper/fiber optic"
configuration incorrect
–
Opposite station not switched on or
faulty
–
Check remote bus connection
–
Check field multiplexer configurations
("master/slave" and "copper/fiber optic"
jumpers properly inserted?), see
–
Check interface converter (if present)
–
Check supply of opposite station
Summary of Contents for 2861205
Page 1: ...User manual Configuring and installing the Inline field multiplexer...
Page 6: ...IB IL 24 MUX MA PAC 6 PHOENIX CONTACT 5981_en_06...
Page 26: ...IB IL 24 MUX MA PAC 26 PHOENIX CONTACT 5981_en_06...
Page 64: ...IB IL 24 MUX MA PAC 64 PHOENIX CONTACT 5981_en_06...
Page 86: ...IB IL 24 MUX MA PAC 86 PHOENIX CONTACT 5981_en_06...
