Festo 03 - Page 138

The valve terminal triggers "PF Peripherie fault"
as a common error message, as described in
Chapter 4.2.6. If the valve teminal type 03 or
type 05 is fitted with input modules, this common
error message can be more accurately deci-
phered with the aid of the status bits.
Status bits
The four status bits are made available by the
terminal and interrogated like normal inputs. The
contents are coded and contain the following
information:
PLEASE NOTE
The four status bits of the valve terminal are
only available when the terminal is fitted with
input modules. They always occupy four ad-
dresses of the address range. The position of
the status bits (low byte/high byte, byte n/n+1)
depends principally on the INTERBUS control-
ler board and your controller.
Diagnostic
information
Meaning Cause
V
valves
(V
val
)
Monitors the tolerance of the
operating voltage of the valves
and electrical outputs.
Operating voltage at pin 2 of
operating voltage connection
< 21.6 V
V
outputs
(V
out
)
Monitors the operating voltage
of the valves and electrical
outputs (no voltage e.g.
EMERGENCY OFF).
Operating voltage at pin 2 of
operating voltage connection
< 10 V
V
inputs
(V
inp
)
Monitors the supply voltage of
the inputs (sensors)
Internal fuse triggered
Short
circuit/
overload
Monitors the electrical outputs
of the output modules
Short circuit or overload
Fig. 5/8: Error states of valve terminal
VIFB6 - 03/05 5. Diagnosis/Error Treatment
9809c 5-13