20
ifm
Device Manual IO-Link Master with Modbus interface CabinetLine 8 Ports IP 20 (AL1940)
05 / 2018
Operating and display elements
LED indicators
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7.2
LED indicators
22024
The device only has the following LED indicators:
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7.2.1
Status LEDs
11748
The RDY LED indicates the status of the gateway.
The RUN LED indicates the current state of the Modbus state machine.
The ERR LED indicates occurring errors.
Status LED
Description
RDY
green
on
gateway functions properly
flashing 1 Hz
error
flashing 5 Hz
firmware update
off
gateway does not function; device reboots
ERR
red
on
error in application controller
flashes (10 Hz)
boot error
flashes (200 ms on,
200 ms off, 200 ms on,
1000 ms off)
watchdog error (Modbus or process data)
flashes (200 ms on,
1000 ms off)
local error
flashes (2.5 Hz)
invalid configuration
off
no error
RUN
green
on
connection established
flashes (1 Hz)
ready, but not yet configured
flashes (5 Hz)
waiting for connection
off
not ready
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7.2.2
Ethernet interface
22027
Each Ethernet interface (X21, X22) has 2 LEDs (LNK and ACT). The LEDs indicate the status of the
Ethernet connection.
Status LED
Description
LNK
green
on
Ethernet connection established
off
No Ethernet connection
ACT
yellow
flashes
Data is transmitted via the Ethernet interface.
off
No data transmission
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