ABB AC31 Assembly And Operation Manual page 116

AC31 Adapters
Replacement devices: I/O modules > Replacement device 07AC91-AD
The RAM is checked during the initialization of the device. In addition, the firmware in the Flash
memory is checked by means of a checksum during initialization. When the control system
(PLC/central unit) is stopped during normal operation, the outputs of the device are switched off.
The outputs are also switched off in case of a malfunction of the CS31 bus bus.
1.5.4.2.7 Diagnosis and display
LEDs are used for diagnosis and display purposes. In addition, some diagnosis information can
be transmitted via the CS31 bus.
Table 66: Diagnosis information of the CS31 bus bus
Channel
Device error:
0
Table 67: Device LEDs
LED
PWR
CS31
bus
S-ERR
I/O bus
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
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.
116
The replacement device does not provide a test button to measure functionality.
Error code (COD-
ESYS)
43
The error codes that are transferred by the replacement device via the CS31
bus bus are newly displayed in CODESYS. Each error code of the CS31 bus
(table column 3) produces the error code in CODESYS (table column 2). As a
result, it is possible to operate the replacement device with a new control
system (PLC/control unit), e.g. 07KT98-ARC-AD, as well as with an old control
system (PLC/central unit), e.g. 07KT98.
Status Color LED off
Voltage supply Gree
n
CS31 bus com- Gree
munication n
Error Red
I/O bus commu- Gree
nication n
3ADR010122, 8, en_US
Error code (CS31
bus)
1
LED on
No internal supply Internal supply
voltage voltage
No CS31 bus com- CS31 bus bus
munication communication
No error Static error
(must be con-
firmed by the
control system)
No I/O bus commu- I/O bus com-
nication munication
Description
Internal error
LED flashes
-
Only diagnosis, no
data transfer. Trans-
mission is disturbed.
No CS31 bus con-
nection or activity
Error I/O bus com-
munication
Ä Chapter 1.3 "System
2018/09/24