LED Color OFF ON Flashing
Red --- Communication
error (timeout)
appeared
IP address error
STA2 ETH
(System LED
"SF")
Green Device has valid
parameters
Device is running
parameterization
sequenze
Device has no
parameters
Red --- --- Device has
invalid parame-
ters
S-ERR Red No error Internal error --
I/O-Bus Green No expansion
modules con-
nected or com-
munication error
Expansion mod-
ules connected
and operational
---
ETH1 Green No connection at
Ethernet inter-
face
Connected to
Ethernet inter-
face
---
Yellow --- Device is trans-
mitting telegrams
Device is trans-
mitting telegrams
ETH2 Green No connection at
Ethernet inter-
face
Connected to
Ethernet inter-
face
---
Yellow --- Device is trans-
mitting telegrams
Device is trans-
mitting telegrams
Table 152: States of the 29 Process LEDs
LED Color OFF ON Flashing
DC0 to DC7 Yellow Input/Output is
OFF
Input/Output is
ON
--
DI8 to DI15 Yellow Input is OFF Input is ON (the
input voltage is
even displayed if
the supply
voltage is OFF)
--
DO8 to DO15 Yellow Output is OFF Output is ON --
UP Green Process supply
voltage missing
Process supply
voltage OK and
initialization fin-
ished
--
UP3 Green Process supply
voltage missing
Process supply
voltage OK
--
CH-ERR1 to CH-
ERR3
Red No error or
process supply
voltage missing
Internal error Error on one
channel of the
corresponding
group
1.7.4.2.9 Technical Data
The System Data of AC500 and S500
Ä
Chapter 2.6.1 “System Data AC500” on page 1248 are
valid for standard version.
Communication Interface Modules (S500) > Modbus
2019/04/17 3ADR010121, 13, en_US 935
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