View source for Opto Troubleshooting

This page is dedicated to troubleshooting of the Opto22 system. Additions to this page should be made in a ''Symptom/Solution''-style. The goal is to provide a 'first place to look'-list for other Opto users and help minimise downtime.
__FORCETOC__
== General Information ==
This table contains info regarding the two Opto brains. It might be useful when troubleshooting network-related issues. Although the physical network point doesn't, strictly speaking, make a difference - it's good to know this in case of network restructuring (note: this has happened before).
{| border="1" cellpadding="2"
|-
|width="300pt" style="background:#A7C1F2"|
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 1'''</center>
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 2'''</center>
|-
|Physical network point||<center>D231</center>||<center>D232</center>
|-
|MAC Address||<center>00:A0:3D:00:17:8E</center>||<center>00:A0:3D:00:42:EA</center>
|-
|DNS Name||<center>opto1</center>||<center>opto2</center>
|-
|Static IP||<center>137.215.116.239</center>||<center>137.215.116.238</center>
|}

The Following Opto Brains are in the Tribology Lab and not the PMC Lab !!

{| border="1" cellpadding="2"
|-
|width="300pt" style="background:#A7C1F2"|
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 1'''</center>
|width="350pt" style="background:#A7C1F2"|<center>'''Opto Brain 2'''</center>
|-
|Physical network point||<center>D231</center>||<center>D232</center>
|-
|MAC Address||<center>00:A0:3D:00:8F:A0</center>||<center>00:A0:3D:00:99:4E</center>
|-
|DNS Name||<center>opto1</center>||<center>opto2</center>
|-
|Static IP||<center>137.215.116.239</center>||<center>137.215.116.238</center>
|}

== Opto Brains ==
=== 3 Volt Fault ===
'''Symptom'''<br/>
The LED indicating a 3 Volt fault is on and the Opto unit can't be communicated with. Resetting the IP manually (see [http://ragnarok/programdownloads/Opto22/1112_SNAP_Ethernet_Brain_Users_Guide.pdf Brain manual]) is also not possible in this state.<br/>
'''Solution'''<br/>
Use a multimeter and check the 5V supply voltage to the rail; the Opto brains require 5V DC (+/-0.1V). If it's found that the supplied voltage is below 4.9V, adjust the output of the power supply (if possible). As a check, test the 'broken' power supply on a working Opto brain to confirm that it is indeed the power supply that has failed and not a short in the brain.

== SNAP Modules ==

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