Experimental Physics and
Industrial Control System

Ralph Lange <[email protected]> · Fri, 06 Dec 2013 13:12:14 +0100

On 06.12.2013 12:42, [email protected] wrote:

Hello John,

A database modification may be enough to achieve a quiet console:
Have all the records that read the device disabled by a single control record, using the SDIS field.
Then one single toggle removes many error messages on the console.
I paste below an example from a lakeshore controller.

Regards,

Ronaldo

record(bo, "$(P):DISABLE") {                                          |
   field(DESC, "Disable comms")                                        |
   field(PINI, "YES")                                                  |
   field(VAL, "0")                                                     |
   field(OMSL, "supervisory")                                          |
   field(ZNAM, "Enabled")                                              |
   field(ONAM, "Disabled")                                             |
}

record(stringin, "$(P):ID") {                                         |
   field(DTYP, "stream")                                               |
   field(SDIS, "$(P):DISABLE")                                         |
   field(INP, "@lakeshore336.proto getID $(PORT) $(ADDR)")             |
   field(SCAN, "$(SCAN) second")                                       |
}                                                                     |

I have seen people use some harmless status value of the device, scan

that record every 10 seconds, and use its SEVR as the disable input for

all other (faster) records polling the same device.

That way, when the device goes down the sources of error messages are

automatically reduced to one record every 10 seconds, connection status

is checked every 10 seconds, and the full set of fast scanning records

continues automatically when the device is back.

Note that the SDIS links pull records into one lock set. You might want

to set those to CA to avoid that.

~Ralph

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System