LED Indicators
Two LED’s are located on the Device net expansion board.
MS - Module Status LED
Displays the operational status of the Device Net Interface expansion board (EXB). Status is summarized in Table
| Table |
LED State | Status Description |
OFF | No power is applied to the EXB. |
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Green | The EXB is operating in a normal condition. |
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Flashing | The EXB is in standby mode. The EXB may be attempting to |
Green | communicate with the Series H control. Be sure the Series H |
| control is in RS485BBP mode. |
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Red | The EXB has an unrecoverable fault and may need to be |
| replaced. |
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Flashing | The EXB has had a recoverable fault. This may be an invalid |
Red | DIP switch setting or the lost Bus Power (Device Net cable |
| disconnected). |
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Flashing | The EXB is in a self test mode. |
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NS - Network Status LED
Displays the status of the connection to the Device Net network. Status is summarized in Table
| Table |
LED State | Status Description |
OFF | The EXB is not Online or has lost power. |
Green | The EXB is Online and operating. Link OK, Online, Connected. |
Flashing | EXB is Online but no connection is established. EXB passed |
Green | the DUP_MAC_ID test, Online, but has no connections to other |
| nodes. |
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Red | Failed communications tests. EXB detected errors that prevent |
| it from communicating on the network. Duplicate MAC ID, |
| |
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Flashing | One or more I/O connections have timed out. Connection timed |
Red | out. |
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Flashing | The EXB is in a self test mode. |
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