3. Signalling
The gateway’s 6 LEDs and the descriptive label on the removable cover which hides its block of selector switches allow you to diagnose the status of the gateway:
c | d |
| telm |
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| LUFP9 |
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| f |
| n o | |
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| p q | ||
e |
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| r s | ||
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| h | 1 NETWORK STATUS | ||
| 2 MODULE STATUS | |||
g | 3 NOT USED | |||
| 4 NOT USED | |||
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| 5 MODBUS | ||
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| 6 GATEWAY | ||
DeviceNet™
| LED | LED Æ Gateway state |
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| Off: Gateway not connected to |
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| the DeviceNet bus |
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| Green: Gateway connected to |
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| the DeviceNet bus: |
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| Connection established |
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| Red: Fatal error on connection |
n | NETWORK | to the DeviceNet bus |
| STATUS | Flashing (green): Gateway |
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| connected to the DeviceNet bus: |
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| Connection not established |
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| Flashing (red):Timeout in |
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| connection to the DeviceNet bus |
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| The length of this timeout is |
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| defined by the DeviceNet master |
p NOT USED | Off: — | |
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| Off: No power |
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| Flashing (green): No Modbus |
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| communications |
r MODBUS |
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Green: Modbus | ||
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| communications OK |
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| Red: Loss of communication with |
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| at least one Modbus slave (1) |
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| LED | LED Æ Gateway state |
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| Off: No power |
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| Red: Unrecoverable failure |
o | MODULE |
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| STATUS | Green: Gateway is operational |
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| Flashing (red): Minor fault |
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q NOT USED | Off: — | |
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| Off: No power |
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| Flashing (red/green): |
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| Configuration absent / not valid |
s GATEWAY | Use AbcConf to load a valid | |
configuration | ||
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| Green: Gateway currently being |
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| initialized and configured |
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| Flashing (green): Gateway is in |
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| running order: Configuration OK |
(1)The LED rMODBUS becomes red whenever you use incorrect values in the outputs corresponding to the queries of the two aperiodic services designed to read/write the value of any parameter of a Modbus slave (see chapter 4.2.8 Description of Services Assigned to Gateway Inputs/Outputs, page 31). This LED will only revert to its former green state if you reuse these very same services, but with correct values. More generally, this LED becomes red, then reverts to a green state, on loss and recovery of the communications with any Modbus slave.
N.B. If the DEVICE STATUS LED s is flashing following a sequence beginning with one or
more red flashes, we advise that you note down the order of this sequence and give this information to the Schneider Electric support service.
In some cases, all you need to do is power the gateway off then back on again to solve the problem.
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