GE Fanuc 90-30 CPU364 not running

Currently our CPU is not running. LAN LED is off and RUN LED is off too. We have LogicMaster software but cannot find any miniconverter cable. Probably someone misplace in our plant. Ge Fanuc currently have connection to Allen Bradley L71 PLC using ethernet switch. Can LM can connect through the switch as well?

LogicMaster can communicate via Ethernet.

If I recall, you need the MAC address of the CPU. It should be printed on the label on the side.

There is a place in LM where you enter the MAC address. I have not used LM for a few years, so I can't be exact.

Yes, you can set up Logicmaster to communicate via Ethernet. You have to use the correct version of Logicmaster and it is a rather complicated procedure to set it up. Get yourself a copy of the manual GFK-1401

Have you tried to locate the key and cycled the on/off keyswitch?

The run light being off usually means the PLC is in "Stop mode" due to faults.
Yo will have to connect LM90 (or Machine Edition if you have converted the logic) to the
PLC and see what faults (CPU and IO Faults) caused the plc to go into stop mode. If you clear the faults in both tables and put the plc back into "Run Mode". Then see if it faults again.
By the way..it is common to see some faults regarding Ethernet communications.

I also noticed the Ethernet light is off. The Ethernet communications could be faulted.
You will see a small hole next to "Ethernet Restart" on the 364.
There is a small button inside this hole. Use a pin to push and release the button.
This should reset the Ethernet communications.

Not to scare you....but GE had issues with the 364CPU and a lot of them had poor life spans. You can still get pretty good deals on the 364CPU on Ebay.
There are 2 better 90-30 CPUs with Ethernet also available (372CPU and a 374CPU), but you will need Machine Edition software to use these. They are "Web Enabled", so it is easy to monitor the condition of the CPU, including fault tables.
Prices are jacked up because the 90-30 is obsolete.

I would advise upgrading to Machine Edition software....LM90 will not work with Windows 7.
It is VERY easy to upgrade the LM90 logic to Machine Edition.

Also....if you still want the SNP programming cable.....
Here is a link to an SNP programming cable for 90-30..
It is a little more expensive than others you can find but I like it best.
It is fully molded and has lights showing communications and a nice 12' long cable.
http://www.asedata.com/GE_Fanuc_PLC.asp

Here is a cheaper one on ebay than from ASE:
http://www.ebay.ca/itm/APPLIED-SYSTEMS-ENGINEERING-12-CABLE-RS232-DB9-TO-SNP-PORT-DB15-P-N-AS693232SNP-/261625706888?pt=US_Parallel_Serial_PS_2_Cables_Adapters&hash=item3cea1b7988

You can make a cable if you have the connectors:
http://forums.ge-ip.com/showthread.php?p=60395#post60395

Also have you tried to cycle power to the rack? The GE CPUs can be setup to clear faults and reload RAM on power up. Of course not many people use that capability, but it is worth a try.

I would try to recycle power as last resort. It never been down coz we afraid after shutdown some lectronics may not work anymore. Thanks guy for all the advise. We are planning to upgrade to another system. Currently just maintain it until new hardware arrived.

We had on/off the keyswitch but not work. Same as ethernet reset button.

Port 1 on the CPU364 can also be used for programmer communications. It might be easier to make a cable for that since it is RS232 meaning you don't need the miniconverter.

The RS-232 port on the CPU364 is a "Station Manager Port" only, it can not be used to access the CPU, only the Ethernet port configuration. See GFK-1490: http://support.ge-ip.com/support/index?page=docchannel&id=S:DO680