Experimental Physics and
Industrial Control System

Hi John,

asynTrace is printing each character as it arrives, which suggests that
each character is in its own packet?  But it looks like the string when
assembled should be what you expect, right?

Mark


-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of John Dobbins
Sent: Monday, January 17, 2011 3:23 PM
To: EPICS Tech-Talk
Subject: StreamDevice/ASYN connection to a Telnet port

Dear All,

I am connecting to a Gamma Vacuum SPCe ion pump power supply. This
device has an ethernet port which accepts telnet connections.

I set up StremDevice to communicate with it on port 23,

I have  asyn Trace Masks set as follows:

asynSetTraceMask("SPCe",-1,0x09)
asynSetTraceIOMask("SPCe",-1,0x2

I have a problem in that the response string , which I expect to look
like  "OK 00 7.90E-13 TORR" 

appears like this:


epics> 2011/01/17 16:14:55.995 172.18.32.21:23 write 7
spc 0B\r
2011/01/17 16:14:56.475 172.18.32.21:23 read 1
O
2011/01/17 16:14:56.475 172.18.32.21:23 read 1
K
2011/01/17 16:14:56.475 172.18.32.21:23 read 1
 
2011/01/17 16:14:56.475 172.18.32.21:23 read 1
0
2011/01/17 16:14:56.475 172.18.32.21:23 read 1
0
2011/01/17 16:14:56.476 172.18.32.21:23 read 1
 
2011/01/17 16:14:56.476 172.18.32.21:23 read 1
7
2011/01/17 16:14:56.476 172.18.32.21:23 read 1
.
2011/01/17 16:14:56.476 172.18.32.21:23 read 1
9
2011/01/17 16:14:56.477 172.18.32.21:23 read 1
0
2011/01/17 16:14:56.477 172.18.32.21:23 read 1
E
2011/01/17 16:14:56.477 172.18.32.21:23 read 1
-
2011/01/17 16:14:56.477 172.18.32.21:23 read 1
1
2011/01/17 16:14:56.478 172.18.32.21:23 read 1
3
2011/01/17 16:14:56.478 172.18.32.21:23 read 1
 
2011/01/17 16:14:56.478 172.18.32.21:23 read 1
T
2011/01/17 16:14:56.478 172.18.32.21:23 read 1
O
2011/01/17 16:14:56.478 172.18.32.21:23 read 1
R
2011/01/17 16:14:56.479 172.18.32.21:23 read 1
R
2011/01/17 16:14:56.479 172.18.32.21:23 read 1
\r


Can someone tell me what is going on here?

Regards and thanks,

John Dobbins

Cornell University
Lab for Elementary Particle Physics

References:

StreamDevice/ASYN connection to a Telnet port John Dobbins

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