Experimental Physics and
Industrial Control System

William Kirstaedter via Tech-talk <[email protected]> · Thu, 29 Nov 2018 17:41:31 +0100

The device is connected to Ethernet.

The guy who made it wrote a java program to read and control it, so I

dont really think timing is an issue but I will of course try that too.

William Kirstaedter (PP&B)
Fritz-Haber-Institut der MPG
Faradayweg 4-6
14195 Berlin
Tel: 030 8413 5405
Mail: [email protected]

Am 29.11.2018 um 17:36 schrieb Dirk Zimoch via Tech-talk:

The PRIO "HIGH" setting should give the output priority over the input

in the StreamDevice layer. But when you see the output string in asyn

trace, it is already through the StreamDevice layer. So everything

seems fine from the StreamDevice point of view. Also asyn prints this

as it writes its output. Thus from the asyn point of view everything

is fine as well.

What type of connection do you have to the device? RS232?

I have seen RS232 devices, that needed some time between characters.

(Maybe they don't have an input buffer?) When you type in the command

manually, there is usually plenty of time between the chars, but from

a program, there isn't.

What if you write to the serial port from the command line, like:

echo -en "STM\r" > /dev/ttyS0

If that also does not work, then it may be a the character timing.

I have once written an asynInterposeDelay driver to spit out chars one

by one (code attached).

Usage like this:
drvAsynSerialPortConfigure "device", "/dev/ttyS0"
asynInterposeDelay "device", 0, 0.001

It supports dynamic change of the delay as well, so you don't need to

reboot to find the best delay:

asynShowOption "device", 0, "delay"
asynSetOption "device", 0, "delay", 0.05

Maybe that helps.

Dirk

On 29.11.2018 17:00, William Kirstaedter via Tech-talk wrote:

Yes, I am issuing

caput CRYVISIL:TC09:Toggle 0

--

when the IOC starts and the device doesnt already send data, I am

able to toggle with

caput CRYVISIL:TC09:Toggle 1

which results in "STM\r" showing up in the asyn TraceMask, followed

by the stream.

When simulating the process "by hand" with telnet, it's no problem

sending STM and ETM.

William Kirstaedter (PP&B)
Fritz-Haber-Institut der MPG
Faradayweg 4-6
14195 Berlin
Tel: 030 8413 5405
Mail:[email protected]

Am 29.11.2018 um 16:10 schrieb Michael Westfall via Tech-talk:

How are you commanding the bo record?

Are you sure its value is being commanded to zero when you want to

stop reading?

Did you try something like, 'caput xxx:Toggle 0' ?

On Thu, Nov 29, 2018 at 10:21 AM William Kirstaedter via Tech-talk

<[email protected] <mailto:[email protected]>> wrote:

    Hi Dirk,

    thanks for the quick answer.

    I have set

    field(PRIO, "HIGH")

    but this doesnt seem to do anything?

    I have asynTraceMask on aswell but I dont see the "ETM" command

ever

    pass through...

    William Kirstaedter (PP&B)
    Fritz-Haber-Institut der MPG
    Faradayweg 4-6
    14195 Berlin
    Tel: 030 8413 5405
    Mail: [email protected]
    <mailto:[email protected]>

    Am 29.11.2018 um 13:37 schrieb Dirk Zimoch via Tech-talk:
    > Hi William,
    >
    > Have you tried to give the output record a high priority?
    >
    > Dirk
    >
    > On 29.11.2018 13:27, William Kirstaedter via Tech-talk wrote:
    >> I'm sorry to send this again but my first mail got soft-rejected
    >> because I wasnt a subscriber.
    >>
    >> William Kirstaedter (PP&B)
    >> Fritz-Haber-Institut der MPG
    >> Faradayweg 4-6
    >> 14195 Berlin
    >> Tel: 030 8413 5405
    >> Mail: [email protected]
    <mailto:[email protected]>
    >>
    >> Am 29.11.2018 um 11:34 schrieb William Kirstaedter:
    >>> Hi,
    >>>

    >>> I have a small problem with a fast Device, maybe somebody

already

    >>> had this problem and can help out? :)
    >>>
    >>> It runs via I/O Intr.
    >>> I am able to start the reporting, but I cant stop it. It seems
    that
    >>> the stop command doesnt get through....

    >>> could it be that somehow the communication is blocked by the

fast

    >>> input? how could I fix that?
    >>>
    >>> Its really simple to control:
    >>> You send "STM\r", it starts reporting every 18ms
    >>> "tmp,<float>,<float>\r"

    >>> You send "ETM\r", it stops doing that, terminating

communication

    >>> with "txx\r".
    >>>
    >>> all ASCII formatted.
    >>>
    >>> my records:
    >>>
    >>> tc.db file:
    >>>
    >>> record(bo, "$(P):$(R):Toggle"){
    >>>    field(DESC, "Toggle Reading")
    >>>    field(DTYP, "stream")
    >>>    field(OUT, "@tc.proto toggle $(BUS)")
    >>>    field(ZNAM, "ETM")
    >>>    field(ONAM, "STM")
    >>>    field(VAL, "0")
    >>> }
    >>>
    >>> record(ai, "$(P):$(R):Temperature") {
    >>>   field(DESC, "Temperature")
    >>>   field (DTYP, "stream")
    >>>   field (INP, "@tc.proto read_K $(BUS)")
    >>>   field (SCAN, "I/O Intr")
    >>>   field(EGU, "K")
    >>> }
    >>>
    >>> record(ai, "$(P):$(R):ThermoVoltage"){
    >>>   field(DESC, "TC Thermovoltage")
    >>>   field(DTYP, "stream")
    >>>   field(INP, "@tc.proto read_nV $(BUS)")
    >>>   field(SCAN, "I/O Intr")
    >>>   field(EGU, "nV")
    >>> }
    >>>
    >>> tc.proto file:
    >>>
    >>> Terminator = CR;
    >>> ExtraInput = Ignore;
    >>>
    >>>
    >>> toggle {
    >>>         out "%{ETM|STM}";
    >>>         in "txx";
    >>> };
    >>>
    >>> read_K {
    >>>         in "tmp,%f,%*f";
    >>> };
    >>>
    >>> read_nV {
    >>>         in "tmp,%*f,%f";
    >>> };
    >>>
    >>
    >>
----------------------------------------------------------------------

    >> Das FHI verarbeitet, speichert und loescht Daten im Rahmen

seiner

    >> Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung
    (DSGVO)
    >> [General Data Protection Regulation (GDPR)] der Europaeischen
    Union.
    >>

----------------------------------------------------------------------
    Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner

    Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung

(DSGVO)

    [General Data Protection Regulation (GDPR)] der Europaeischen

Union.

--
Mike Westfall
Control Systems Software Engineer

----------------------------------------------------------------------

Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner

Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO)

[General Data Protection Regulation (GDPR)] der Europaeischen Union.

----------------------------------------------------------------------
Das FHI verarbeitet, speichert und loescht Daten im Rahmen seiner
Geschaeftstaetigkeit gemaess der Datenschutz-Grundverordnung (DSGVO)
[General Data Protection Regulation (GDPR)] der Europaeischen Union.

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System