Experimental Physics and
Industrial Control System

[email protected] · Wed, 05 Jul 2017 03:58:37 -0400

Hi,

I want to give access based on local/remote switch at my embedded IOC.

For this

As per message at tech-talk

www.aps.anl.gov/epics/tech-talk/2011/msg00728.php titled "About ASG

usage" and www.aps.anl.gov/epics/tech-talk/2009/msg01270.php

1. I have made following acf file

HAG(local) {mylocalIP,127.0.0.1}
HAG(remote){myremoteIP}
ASG(loMode){
	INPA("acndHost:xxxExample:MODE_PV")
	RULE(1,READ)
	RULE(1,WRITE)
	{
		HAG(local)
		CALC("A=0")
	}
}
ASG(reMode){
	INPA("acndHost:xxxExample:MODE_PV")
	RULE(1,READ)
	RULE(1,WRITE)
	{
		HAG(remote)
		CALC("A=0")
	}
}

2. I am using default example generated using
makeBaseApp.pl -t example myexample
makeBaseApp.pl -i -t example myexample

and then modified dbExample1.db for field ASG
record(xxx, "$(user):xxxExample")
{
field(DESC, "xxx record")
field(ASG, "loMode")
field(EGU, "Counts")
field(HOPR, "10")
field(HIHI, "8")
field(HIGH, "6")
field(LOW, "4")
field(LOLO, "2")
field(HHSV, "MAJOR")
field(HSV, "MINOR")
field(LSV, "MINOR")
field(LLSV, "MAJOR")
}

3. I also added field MODE_PV in record xxx with ASL1

field(MODE_PV,DBF_CHAR) {
		 prompt("MODE VALUE local=0, remote=1")
		 asl(ASL1)
		 pp(TRUE)
	}

4. Also,at ioc shell
epics> dbtr "acndHost:xxxExample"
ACKS: MAJOR         ACKT: YES           ADEL: 0             ALST: 0
ASG: loMode         BKPT: 00            DESC: xxx record    DISA: 0

DISP: 0 DISS: NO_ALARM DISV: 1 DTYP:

SoftChannel

EGU: Counts         EVNT: 0             FLNK:CONSTANT 0     HHSV: MAJOR
HIGH: 6             HIHI: 8             HOPR: 10            HSV: MINOR
HYST: 0             INP:CONSTANT        LALM: 2             LCNT: 0
LLSV: MAJOR         LOLO: 2             LOPR: 0             LOW: 4
LSV: MINOR          MDEL: 0             MLST: 0             MODE_PV: 0

NAME: acndHost:xxxExample NSEV: NO_ALARM NSTA:

NO_ALARM

PACT: 0             PHAS: 0             PINI: NO            PREC: 0
PRIO: LOW           PROC: 0             PUTF: 0             RPRO: 0
SCAN: Passive       SDIS:CONSTANT       SEVR: MAJOR         STAT: LOLO
TIME: 2017-07-05 13:00:35.793148400     TPRO: 0             TSE: 0
TSEL:CONSTANT       UDF: 0              VAL: 0

5. The asprules at iocshell is showing  the following

epics> asprules
ASG(DEFAULT)
ASG(loMode) {
	INPA(acndHost:xxxExample.MODE_PV) INVALID value=0.000000
	RULE(1,READ,NOTRAPWRITE)
	RULE(1,WRITE,NOTRAPWRITE) {
		HAG(local)
		CALC("A=0") result=TRUE
	}
}
ASG(reMode) {
	INPA(acndHost:xxxExample.MODE_PV) INVALID value=0.000000
	RULE(1,READ,NOTRAPWRITE)
	RULE(1,WRITE,NOTRAPWRITE) {
		HAG(remote)
		CALC("A=1") result=FALSE
	}
}
epics>

5. But the command  at local machine shows:

$:cainfo acndHost:xxxExample
acndHost:xxxExample
    State:            connected
    Host:             www.acnd.docsrv:5064
    Access:           read, no write
    Native data type: DBF_DOUBLE
    Request type:     DBR_DOUBLE
    Element count:    1

But the ACCESS is shown as read, no write. instead of READ,WRITE.

6. further trying
epics> dbpf acndHost:xxxExample.MODE_PV,1
DBR_CHAR:           1         0x1
epics> asprules
ASG(DEFAULT)
ASG(loMode) {
	INPA(acndHost:xxxExample.MODE_PV) INVALID value=0.000000
	RULE(1,READ,NOTRAPWRITE)
	RULE(1,WRITE,NOTRAPWRITE) {
		HAG(local)
		CALC("A=0") result=TRUE
	}
}
ASG(reMode) {
	INPA(acndHost:xxxExample.MODE_PV) INVALID value=0.000000
	RULE(1,READ,NOTRAPWRITE)
	RULE(1,WRITE,NOTRAPWRITE) {
		HAG(remote)
		CALC("A=1") result=FALSE
	}
}

Still the rules are not changed...

Please suggest what is going wrong!!!

Best Regards
Sandeep,
B.A.R.C, Mumbai
India

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System