LEDs
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10.3.3
LED DeviceNet Master (NHST-T100-DN/DNM)
The subsequent table describes the meaning of the MNS LED of the
NHST-T100-DN/DNM netHOST device:
LED
Color
State
Meaning
MNS
Position in the
device drawing:
(14)
Duo LED red/green
(green)
On
Device operational AND on-line, connected
Device is online and has established all connections with all
Slaves.
(green)
Flashing (1 Hz)
Device operational AND on-line
Device is online and has established no connection in the
established state.
- Configuration missing, incomplete or incorrect.
(green/red/off)
Flashing
green/red/off
Self-test:
The device is performing its its power-up testing. The
indicator turns green for approximately 250 ms, turns red for
approximately 250 ms, and then turns off.
(red)
Flashing (1 Hz)
Minor fault and/or connection time-out
Device is online and has established one or more connections in
the established state. It has data exchange with at least one of the
configured slaves.
Minor or recoverable fault: No data exchange with one of the
configured Slaves. One or more Slaves are not connected.
Connection timeout.
No network power present.
(red)
On
Critical fault or critical link failure
Critical connection failure; device has detected a network error:
duplicate MAC-ID or severe error in CAN network (CAN-bus off).
(off)
Off
Device is not powered
- The device may not be powered.
Device is not on-line and/or no network power
- The device has not yet completed the Dup_MAC_ID test.
- The device is powered, but the network power is missing.
Table 40: LED states for the DeviceNet Master protocol
LED state
Definition
Flashing (1 Hz)
The indicator turns on and off with a frequency of 1 Hz: “on” for 500 ms,
followed by “off” for 500 ms.
Flashing
green/red/off
The indicator turns on green on for 250 ms, then red on for 250 ms, then
off.
Table 41: LED state definitions for the DeviceNet Master protocol
netHOST NHST-T100 | LAN controlled master devices
DOC130401UM05EN | Revision 5 | English | 2018-05 | Released | Public
© Hilscher 2013 – 2018
