ABB AC500 PLC - State LEDs; Measuring Ranges; Input Ranges Voltage, Current and Digital Input

State LEDs
LED State Color LED = OFF LED = ON LED flashes
DO0 to
DO15
Digital output Yellow Output is
OFF
Output is ON --
DC16 to
DC23
Digital input/
output
Yellow Input/output
is OFF
Input/output is
ON
1
)
--
AI0 to AI3 Analog input Yellow Input is OFF
Input is ON
2
)
--
AO0 to
AO1
Analog
output
Yellow Output is
OFF
Output is ON
2
)
--
UP Process
supply
voltage
24 VDC via
terminal
Green Process
supply
voltage is
missing
Process
supply voltage
OK
--
CH-ERR1 Channel
error, error
messages in
groups (dig-
ital inputs/
outputs com-
bined into the
groups 1, 2,
3, 4)
Red No error or
process
supply
voltage is
missing
Severe error
within the cor-
responding
group
Severe error
within the cor-
responding
group (e.g.
short circuit at
an output)
CH-ERR2 Red
CH-ERR3 Red
CH-ERR4 Red
CH-ERR
3
)
Module error Red -- Internal error --
1
) Indication LED is ON even if an input signal is applied to the channel and the
supply voltage is off. In this case the module is not operating and does not gen-
erate an input signal.
2
) Brightness depends on the value of the analog signal
3
) All of the LEDs CH-ERR1 to CH-ERR4 light up together
Measuring Ranges
Input Ranges Voltage, Current and Digital Input
Range 0...10 V -10...+10
V
0...20 mA 4...20 mA Digital
input
Digital value
Decimal Hex.
Overflow > 11.7589 > 11.7589 > 23.5178 > 22.8142 32767 7FFF
Measured
value too
high
11.7589
:
10.0004
11.7589
:
10.0004
23.5178
:
20.0007
22.8142
:
20.0006
32511
:
27649
7EFF
:
6C01
Normal
range
Normal
range or
measured
value too
low
10.0000
:
0.0004
10.0000
:
0.0004
20.0000
:
0.0007
20.0000
:
4.0006
On 27648
:
1
6C00
:
0001
0.0000 0.0000 0 4 Off 0 0000
Device Specifications
I/O Modules > Digital/Analog I/O Modules
2019/04/17 3ADR010121, 13, en_US 625