● After successful initialization of the CS31 bus communication, the CS31 bus LED lights up.
The S-ERR LED goes out.
● During operation, the yellow LEDs indicate the signal statuses of the channels.
1.5.2.7 Diagnosis and Displays
LEDs are used for diagnosis and display purposes. In addition, some diagnosis information can
be transmitted via the CS31 bus.
The replacement device does not provide a test button to measure functionality.
Table 45: Diagnosis information of the CS31 bus
Error description Channel Error code
(CODESYS)
Error code
(CS31 bus)
Description
Device error 0 43 1 Internal error
Channel error 0, 8, 15 *) 46 4 Overload or short
circuit on a digital
output
*) The channel numbers are grouped as follows:
0 - for X2 / 1.0 to 1.7
8 - for X2 / 2.0 to 2.7
15 - for X5 / 3.0 to 3.7 and X6 / 4.0 to 4.7
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.
Table 46: Device LEDs
LED Status Color LED off LED on LED flashes
PWR Voltage supply Gree
n
No internal supply
voltage
Internal supply
voltage
-
CS31
bus
CS31 bus com-
munication
Gree
n
No CS31 bus com-
munication
CS31 bus bus
communication
Only diagnosis, no
data transfer. Trans-
mission is disturbed.
S-ERR Error Red No error Static error
(must be con-
firmed by the
control system)
No CS31 bus con-
nection or activity
I/O bus I/O bus commu-
nication
Gree
n
No I/O bus commu-
nication
I/O bus com-
munication
Error I/O bus com-
munication
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.
Replacement devices: I/O modules > Replacement device 07DC92-AD
2018/09/243ADR010122, 8, en_US80
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