279954 / 944260310110
2022-05-04·BA00·III·en·00
Operation
21
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CPU module for Zone 1
Series 9442/32
Status indication of the interfaces
If the error cannot be eliminated using the specified procedures:
▶
Contact R. STAHL Schaltgeräte GmbH.
For rapid processing, have the following information ready:
• Type and serial number of the device
• DCS/PLC
• Protocol
• Revision no./firmware version
• Purchase information
• Error description
• Intended purpose (especially input/output circuit)
LED status
Status
Cause of error
Troubleshooting
The "RS485"
LED (green),
"ACT" LED
(green) and
"USB" LED
(green) are
blinking
Data traffic
No error
–
The "RS485"
LED (green),
"ACT" LED
(green) and
"USB" LED
(green) light up
Very high data
traffic
No error
–
"LNK" LED
(yellow) lights up
Physical
connection
available
No error
–
The "LNK" LED
(yellow) is off
The physical
connection is
disconnected or
normal operation
if the respective
port remains
unused
Physical Ethernet
connection between the
CPU and the next Ethernet
node (e.g. switch)
interrupted
• Check that the
connection of the
Ethernet line is
correct and that it is
intact
• If necessary, replace
the Ethernet line
Summary of Contents for 279953
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