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VIFB16 - 03/05
Diagnostic
Meaning
information
V
Monitors the tolerance of the
valves
(V
)
operating voltage of the valves
val
and electrical outputs.
V
Monitors the operating voltage
outputs
(V
)
of the valves and electrical
out
outputs (no voltage available
e.g. EMERGENCY STOP).
V
Monitors the supply voltage of
sensors
(V
)
the inputs (sensors).
sen
Short
Monitors the electrical outputs
circuit/
of the output modules.
overload
Fig. 5/9: Error states of valve terminal
Bit number*)
7
6
2
2
0
0
X
0
X
1
X
1
1
X
*) The status bits always address the four highest-value addresses of
the configured address range.
Fig. 5/10: Coded diagnostics information of the four status bits
5-12
5. Diagnosis/error treatment
The diagnostics information of the four status
bits is coded and has the following meaning:
5
4
2
2
0
0
1
X
0
X
1
X
X
X
Cause
Operating voltage at pin 2 of
operating voltage connection
< 21.6 V
Operating voltage at pin 2 of
operating voltage connection
< 10 V
Internal fuse triggered
Short circuit
or
overload
Meaning
X = not relevant
No error
Output: short circuit/overload
V
< 21.6 V
valves
V
< 10 V
outputs
V
< 10 V
sensors
9705 A
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