ABB AC500 PLC - Group Parameters for the Digital Part

Intended behaviour of
output channel when the
control system stops
Required setting of the
module parameter "Behav-
iour of outputs in case of a
communication error"
Required setting of the
channel parameter "Substi-
tute value"
Substitute value for 5 s and
then turn off
Substitute value 5 sec Depending on configuration
Substitute value for 10 s and
then turn off
Substitute value 10 sec Depending on configuration
Group Parameters for the Digital Part
Name Value Internal
value
Internal value,
type
Default
Input delay 0.1 ms
1 ms
8 ms
32 ms
0
1
2
3
BYTE 0.1 ms
0x00
Detect short cir-
cuit at outputs
Off
On
0
1
BYTE On
0x01
Behaviour DO at
comm. error
1
)
Off
Last value
Last value 5 sec
Last value 10 sec
Substitute value
Substitute value 5 sec
Substitute value 10
sec
0
1
6
11
2
7
12
BYTE Off
0x00
Substitute value
at output
0 ... 255 00h ... FFh BYTE 0
0x0000
Detect voltage
overflow at out-
puts
2
)
Off
On
0
1
BYTE On
0x01
1
) The parameters Behaviour DO at comm. error is only analyzed if the Failsafe-mode is ON.
2
) The state "externally voltage detected" appears, if the output of a channel DC0..DC7 should
be switched on while an externally voltage is connected Ä Chapter 1.7.4.1.3 “Electrical Con-
nection” on page 879. In this case the start up is disabled, as long as the externally voltage is
connected. The monitoring of this state and the resulting diagnosis message can be disabled
by setting the parameters to "OFF".
Device Specifications
Communication Interface Modules (S500) > Modbus
2019/04/173ADR010121, 13, en_US902