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<== Date ==> <== Thread ==>

Subject: RE: MOXA ARM computer and streamDevice
From: "Xu, Huijuan" <[email protected]>
To: "Dirk Zimoch" <[email protected]>
Cc: EPICS tech-talk <[email protected]>
Date: Mon, 4 Oct 2010 15:14:24 -0400
Hello Dirk, 
Actually here we use two embedded computers with x86 processor from
Moxa, DA-682 and DA-710. DA-682 is 2U high with 2 PCI expansion slots
which supports up to 16 serial ports. DA-710 is 4U high with 4 PCI
expansion slots which supports up to 32 serial ports. In addition,
DA-710 also comes with 2 serial ports. The main difference besides is
that DA-710 has dual power input. Both these two models come with VGA,
USB, CompactFlash. 

Regards,
Huijuan

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Hu, Yong
Sent: Monday, October 04, 2010 12:19 PM
To: Dirk Zimoch
Cc: EPICS tech-talk
Subject: RE: MOXA ARM computer and streamDevice

Hello Dirk,

For me using Moxa DA66x, there's no major problem in the cross
compiling, just need some configurations to build
cross-compiler(xscale_be) and EPICS base(i.e. specify
'CROSS_COMPILER_TARGET_ARCHS', 'GNU_DIR', etc.). 

Yes, the NFS server is running on the Moxa box.

Another alternative for computer with multiple serial ports would be
Moxa DA-710 (http://www.moxa.com/product/DA-710.htm ). It's x86
processor and more powerful than little ARM. It comes with 4 Ethernet
ports and 2 RS-232. If need more serial ports, buy the 8-port
RS-232/422/485 expansion module cards (they have 'serial optical
isolation' version) and insert the modules into DA-710 PCI slots(~4).

DA-710 can be shipped with Debian/Linux on a hard-disk so that we can
take advantage of EPICS Debian packages(i.e. base, softioc, procserv,
iocstats, etc.) available from NSLS-2(http://epics.nsls2.bnl.gov/debian/
).

Cheers,

Yong
NSLS-II Controls Group

>-----Original Message-----
>From: Dirk Zimoch [mailto:[email protected]]
>Sent: Monday, October 04, 2010 8:57 AM
>To: Hu, Yong
>Cc: Martin Konrad; EPICS tech-talk
>Subject: Re: MOXA ARM computer and streamDevice
>
>Hello Yong,
>
>I am also interested in this issue.
>
>What is the problem in the cross compiling process?
>
>Can I use NFS on the DA66*?
>
>Are there other alternatives (i.e. 19" computers with many RS232/485
>ports)? So far I used a solution with an additional PC providing remote
>tty devices. But I like the idea of running EPICS directly on the
>machine with the ttys.
>
>Dirk
>
>Hu, Yong schrieb:
>> Hi Martin,
>>
>> I played with Moxa DA662(2 more Ethernet ports than DA661) for a
while
>and made it work with base(3.14.10) + asyn(4.10) + StreamDevice(2.4).
>The cross compiler(linux-xscale_be) source code is from Moxa, but we
>rebuilt it. The whole cross compiling process takes some efforts. I can
>send you the static cross-complied executable(base, asyn and stream all
>included) if you want.
>>
>> My application is to monitor 1-wire temperature sensors (~20K) for
>NSLS-2. We need 90 Moxa DA662, that's a big number. For better system
>maintenance and software development, I'm going to abandon Moxa DA-662
>and changing to use 5 powerful and stable servers(multiple cpu cores)
to
>handle all 1-wire stuff. Another reason I don't like Moxa DA66x is that
>the Linux/Debian inside Moxa has limited tools/commands so that it's
>painful to use.
>>
>> Hope you make a good decision.
>>
>> Yong



References:
MOXA ARM computer and streamDevice Martin Konrad
RE: MOXA ARM computer and streamDevice Hu, Yong
Re: MOXA ARM computer and streamDevice Dirk Zimoch
RE: MOXA ARM computer and streamDevice Hu, Yong

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