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

Subject: Re: Lambda EMS mismatch errors
From: Anthony Andrews <andranth@isu.edu>
To: Rod Nussbaumer <bomr@triumf.ca>
Cc: Yujong Kim <yjkim@isu.edu>, tech-talk@aps.anl.gov
Date: Thu, 25 Oct 2012 17:44:36 -0600
Thanks for the advice! 

The echo command was causing those problems. 

To solve that, I made two records and two protocols to set SB (echo) and SM (command prompt length) to 0.

So, now I can get the current and voltage to change slowly. 

However, in MEDM I have to hit enter quite a lot to get the voltage to change and the current doesn't want to change very fast either.

I also get another kind of mismatch error in the output which I think is a possible cause for the current and voltage changing slowly. 

############################################################################
## EPICS R3.14.12.2 $Date: Mon 2011-12-12 14:09:32 -0600$
## EPICS Base built Oct 17 2012
############################################################################
2012/10/25 16:46:37.111 10.1.1.1:4008 write 3
SR\n
2012/10/25 16:46:37.613 10.1.1.1:4008 write 4
SB0\r
2012/10/25 16:46:37.613 10.1.1.1:4008 write 9
PV38.000\n
iocRun: All initialization complete
###########################################################################
## Start any sequence programs
#seq sncxxx,"user=tonyHost"
epics> 2012/10/25 16:46:38.112 10.1.1.1:4008 write 3
MC\n
2012/10/25 16:46:38.685 10.1.1.1:4008 read 10
0.004\r\000\n\n>
2012/10/25 16:46:38.685 10.1.1.1:4008 write 4
SM0\r
2012/10/25 16:46:38.685 10.1.1.1:4008 write 9
PC 0.000\n
2012/10/25 16:46:38.685 10.1.1.1:4008 write 3
MV\n
2012/10/25 16:46:38.702 10.1.1.1:4008 read 5
\r\000\n\n>
2012/10/25 16:46:38.702 P8 LamEMS:ADDR:VOLT_M: Input "<0d><00>" does not match format %6f
2012/10/25 16:46:39.112 10.1.1.1:4008 write 3
MC\n
2012/10/25 16:46:39.684 10.1.1.1:4008 read 10
0.004\r\000\n\n>



I've also attached a screenshot of telnet, and updated protocol and database file. 

I think that the error here may have something to do with the double space between commands in telnet, but, I'm not sure.

I'm also not sure what <0d><00> means here. 

So far I've tried different terminators, terminators in multiple places (inside protocols and at the top), and I've tried to represent the "\r\000\n\n>" at the end of each read inside of the protocol. 

But, I can't seem to figure it out.  

I think that if I can fix this error, the current and voltage may change a bit faster as well. 

If anyone has any advice on how to get rid of these last error it would be very helpful. 

Thank you. 

 

On Wed, Oct 24, 2012 at 7:05 AM, Rod Nussbaumer <bomr@triumf.ca> wrote:
Tony:

It looks like the power supply echoes the commands that are sent to it. You will need to craft your protocol(s) to read these echoed commands, or there may be a way to turn off the echoes.

Rod Nussbaumer
ISAC Controls, TRIUMF
Vancouver, Canada




On 10/23/2012 05:17 PM, Anthony Andrews wrote:
###########################################################################
## Start any sequence programs
#seq sncxxx,"user=tonyHost"
epics> 2012/10/23 18:05:13.924 xxx.yyy.zzz.aaa:4008 write 3
MC\n
2012/10/23 18:05:13.936 xxx.yyy.zzz.aaa:4008 read 5
MC\n\r\000
2012/10/23 18:05:13.936 P8 LamEMS:ADDR:CURR_M: Input "MC" mismatch after
0 bytes
2012/10/23 18:05:13.936 P8 LamEMS:ADDR:CURR_M: got "MC" where "Current =
" was expected
2012/10/23 18:05:13.936 xxx.yyy.zzz.aaa:4008 write 3
MV\n

Attachment: telnet.png
Description: PNG image

Attachment: EMS_01.vdb
Description: Binary data

Attachment: EMS_01.proto
Description: Binary data


Replies:
Re: Lambda EMS mismatch errors Rod Nussbaumer
References:
Lambda EMS mismatch errors Anthony Andrews
Re: Lambda EMS mismatch errors Rod Nussbaumer

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