The S-ERR LED remains on even if the error no longer occurs. The error must be confirmed by
the control system (PLC/central unit), e.g. by means of a function block
Ä
Chapter 1.3 “System
data and CS31 bus system data” on page 4.
Special cases with rapidly flashing LEDs (approx. 5 Hz):
● All 4 LEDs flash rapidly: An incorrect S500 module is connected to the device. The device
fails to initialize.
● The LEDs of the CS31 bus, S-ERR bus and I/O bus flash rapidly: Invalid position of DIP
switches. The device fails to initialize.
● The LEDs of the S-ERR bus and I/O bus flash rapidly: A checksum error occurred in an
internal Flash memory.
● The LED of the I/O bus flashes rapidly: An error occurred in an internal RAM.
Table 36: LEDs of the S500 module DC532
LED Status Color LED off LED on LED flashes
I0…I7 (see
No. 1 in the
following
figure)
Digital inputs Yellow Input is not acti-
vated
Input is activated
(input voltage is
indicated even if
supply is switched
off)
-
- I8…I15 (see
No. 2 in the
following
figure)
Digital inputs Yellow Input is not acti-
vated
Input is activated
(input voltage is
indicated even if
supply is switched
off)
-
C16…C23
(see No. 3 in
the following
figure)
Digital outputs Yellow Output is not
activated
Output is activated -
C24…C31
(see No. 4 in
the following
figure)
Digital inputs
or digital out-
puts
Yellow Input or output
is not activated
Input is activated
(input voltage is
indicated even if
supply is switched
off)
-
Error indica-
tions left (see
No. 5 in the
following
figure)
Error indica-
tion
Red No error Internal error -
Error indica-
tions right
(see No. 5 in
the following
figure)
Error indica-
tion
Red No error Internal error Overload or
short circuit on
a channel of
the corre-
sponding
group
Indication
supply
voltage (see
No. 6 in the
following
figure)
Process
voltage
Green Process voltage
not available
Process voltage OK -
Replacement devices: I/O modules > Replacement device 07DC91-AD
2018/09/24 3ADR010122, 8, en_US 67
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