[Nut-upsuser] HP R3000 XR (BCMXCP) serial connection problem: e7!!! and e2!!!

[Kjell Claesson]

Hi Robert,
> UPS: HP R3000 XR with HP UPS Management Module
> 
> What I Want:
> I just want the UPS to shut down the client called "tor" before the UPS
> power drains out, I'd prefer to use a direct serial cable instead of
> network, in case the network doesn't work.
> 
> I'll manage the UPS trough the ethernet using the built-in HTTP
> webinterface in the HP UPS Management Module.
> 
> I've created a DB9-RJ45 cable according to the spec (called "-RJ-45 Serial
> 1-5 (5-Port)") released by Brian Vo
> in this forumthread:
> http://forums11.itrc.hp.com/service/forums/questionanswer.do?admit=10944762
> 6+1277983799644+28353475&threadId=1320596
> 
> So this is how my cable look like now:
>   DB9-3 <---> RJ45-4
>   DB9-2 <---> RJ45-5
>   DB9-5 <---> RJ45-6
> 

This does not  look right. The pin 4 on the RJ45 is output ( o/p ) and should 
be connected to the rx pin on the DB9 that is number 2.

So it looks like you have to switch rx tx data.

> This cable is connected between port2 on the HP UPS Management Module, and
> the onboard DB9 connector on a server running Ubuntu 10.04 and NUT 2.4.3
> 
> In the HP UPS Management Module, I've set up a client called "tor" in
> load1, and assigned serial port2 to it with a shutdown time of 2 minutes.
> 
> This is my nut configuration in /etc/nut/ups.conf :
>   [aasgaard]
>     driver = bcmxcp
>     port = /dev/ttyS0

This is OK. But when it has given you the speed it connect with,
you can add the baud_rate to the config also for a quicker
startup.

> 
> This is what happens when i try to start the driver:
>   -----------START-----------
>   robert at tor:~$ sudo upsdrvctl start
>   Attempting to autodect baudrate
This you get because of the missing baud_rate

>   Communications with UPS lost: Receive error (Requested only mode
> command): e7!!!
In the init it sends a 'Requested only mode' command to the ups.
This is not handled by the ups. No respons from the ups.
The command is 0xA0 so this is not communicating at all.

> 
>   Communications with UPS lost: Receive error (Requested only mode
> command): e2!!!
> 
Same as before.

>   Can't connect to the UPS on port /dev/ttyS0!

After it has checked all the baudrates it can not connect.

> 
>   Driver failed to start (exit status=1)
>   -----------STOP-----------
> 
> I've also tried replacing this cable with a regular ethernet cable, and
> the original HP 432734-001 (AF401A) RJ45-DB9 adapter, this is the result I
> get:
>   -----------START-----------
>   robert at tor:~$ sudo upsdrvctl start
>   Network UPS Tools - UPS driver controller 2.4.3
>   Network UPS Tools - BCMXCP UPS driver 0.23 (2.4.3)
>   RS-232 communication subdriver 0.17
>   Attempting to autodect baudrate
>   Can't connect to the UPS on port /dev/ttyS0!
> 
>   Driver failed to start (exit status=1)
>   -----------STOP-----------
> 
> Can anyone in any way help me toward making this work?

Try to switch the rx/tx line. Or messure the signal with a voltmeter.

Regards
Kjell Claesson