problems with SNL - sevr=minor ca_array_get_callback [...]: Virtual circuit disconnect

[Dariush Hampai via Tech-talk <tech-talk at aps.anl.gov>]

Dear Community,
Dear Mark and Maurizio,

I'll try to explain my error from which I'm not able to resolve.
I developped a SNL sequencer ablo to make a raster scan with 20 motors 
(but scalable to how many motors needed) and 20 detectors (same as 
motors number...).
In the link you can find the code (up to now I only use 
"xena_snscan.stt", as the other ones will be the same)
https://urldefense.us/v3/__https://github.com/Teclis77/Scan-Program__;!!G_uCfscf7eWS!aPQyj4WdR7O49u2p_NU4H2lPpTDgz2o1XaIePmAWaJUE8f9HK3CQHpkDwIJWzSP9xdgUviafCfyswv0QGFHqZ1y-Th_61Np0-g$ 

To test the scan I use procServ in order to start contemporary 3 
different IOCs (mm4006 for motors, ortec for detector and the scan). Up 
to here all is ok.
Using telnet I can monitor the scan IOC and after populate the
1) number of motors;
2) number of detectors;
3) name of motor IOCs involved in the scan;
4) name of detector IOCs involved in the scan;
5) start position for each motor;
6) end position for each motor;
7) step position for each motor
I prepare the the loop using difdferent status_mode value (1 for 
populate motor variables in stt file, 2 for detector variables, 3 for 
defing the loop parameters)
When I initialize the scan (status_mode=4), I have a strange error.
Knowing that the variables (for motor_ma, but for the other are the same 
procedures) are built (in xena_sncscan.stt) as
***
sprintf(temp_string, "%s:%s", motor[i], setma);
printf("%s\n", temp_string);
pvAssign(motor_ma[i],temp_string);
sprintf(temp_string, "%s:%s", motor[i], reqmoving);
printf("%s\n", temp_string);
pvAssign(motor_reqmov[i],temp_string);
sprintf(temp_string, "%s:%s", motor[i], moving);
printf("%s\n", temp_string);
pvAssign(motor_mov[i],temp_string);
sprintf(temp_string, "%s:%s", motor[i], pos);
printf("%s\n", temp_string);
pvAssign(motor_pos[i],temp_string);
***

with the output correct form "mm4006_1_1_1:setma", 
"mm4006_1_1_1:reqmoving", "mm4006_1_1_1:moving" and "mm4006_1_1_1:pos" 
(these strings work right with caput command in other cmd so they are ok)
and the status_mode=4 is the following
/*=================== Preparing Scan =========================*/
/*=================== status_mode = 4 ========================*/
        state prepare_loop {
                when () {
                        for (i = 0; i < num_mot; i++) {
                                printf("motor to move = %d\n", i);
                                printf("start[%d]= %f\n", i, start[i]);
                                motor_ma[i]=start[i];
                                pvPut(motor_ma[i],SYNC);
                                motor_reqmov[i]=1;
                                pvPut(motor_reqmov[i],SYNC);
                                pvGet(motor_mov[i],SYNC);
                                while(motor_mov[i]<1) {
                                        motor_reqmov[i]=1;
pvPut(motor_reqmov[i],SYNC);
                                        pvGet(motor_mov[i],SYNC);
                                }
                                pvGet(motor_pos[i], SYNC);
                        }
                        flags[0]=1; // Necessary to start the run
                        strcpy(actual_status, "Ready to Start");
                        pvPut(actual_status,SYNC);
                        status_mode=0;
                        pvPut(status_mode);
                } state dummy_loop
        }

in the "telnet" prompt I have the following exit
sevr=minor ca_array_get_callback( typeToCA(type), count, var->chid, 
pvCaGetHandler, arg): Virtual circuit disconnect
coming from:
pvPut(motor_ma[i],SYNC);

using seqChanShow xena_sncscan I obtain

#9 of 263:
  Variable name: "start"
    type = double
    count = 20
  Value = 1000 1500 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
  Assigned to "xena:start"
  Connected
  Monitored
  Not sync'ed
  Status = 0
  Severity = 0
  Message =
  Time stamp = 2026-01-08 17:26:57.769209
Next? (+/- skip count)

and

#43 of 263:
  Variable name: "motor_ma[0]"
    type = double
    count = 1
  Value = 1000
  Assigned to "mm4006_1_1_1:setma"
  Not connected
  Monitored
  Not sync'ed
  Status = -2
  Severity = -1
  Message = disconnected
  Time stamp = <undefined>
Next? (+/- skip count)

what I'm wrong?
awaiting your replies...

Dariush

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Dr. Dariush Hampai, PhD

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