
Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 77 www.weidmuller.com Rev 2.136
CHAPTER 4 - DIAGNOSTICS
4.0 - Diagnostics Chart
Supply voltage too low.
OR Internal Module Fault
Boot Loader delay at start-up
Radio receiving data (Low Signal strength)
Connection Established to remote device
Data sent from RS-232 Serial Port
Data received to RS-232 Serial Port
Link Established on Ethernet port
Activity on Ethernet port.
Data sent from RS-485 Serial Port
Data received to RS-485 Serial Port
Digital Input is grounded.
Digital Output OFF and Input is open circuit.
The green OK LED on the front panel indicates correct operation of the unit. This LED turns red on failure as described
above. When the OK LED turns red shutdown state is indicated. On processor failure, or on failure during start-up
diagnostics, the unit shuts down, and remains in shutdown until the fault is rectified. During Module, boot-up the OK LED
flashes RED-GREEN until the boot sequence is complete.
Boot Status LED Indication during Start-up
The OK LED indicates the status of the module during the boot up process. At power on, the OK LED comes on RED.
During kernel boot the OK LED flashes Red-Green at a 1Hz rate (½ second red, ½ second green). During module
initialisation, the OK LED flashes Red-Green at 0.5Hz rate (1-second red, 1-second green). When initialisation is
complete, the OK LED switches to green continuously.
If the OK LED remains red at power on, this could indicate either low supply voltage (The module will not attempt to boot
until supply voltage is within range); Module fault; or a long boot delay. To check if the boot delay is the problem, plug a
terminal into the RS-232 serial port and configure for 115,200 baud, 8 data, no parity.
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