Experimental Physics and
Industrial Control System

Hi Ying,

 

I believe you uncommented this line to get your debugging output:

 

//printf("nread_expected = %d\tnread = %d\n", nread_expect,nread);

 

Can you please change that to:

printf("nread_expected=%d, nread=%d, status=%d, timeout=%f, eomReason=%d\n", nread_expect, nread, status, M1K_TIMEOUT+acquireTime, eomReason);

 

That will show more information returned by pasynOctetSyncIO->writeRead().

 

It seems like status must be asynSuccess, because otherwise you would have also seen the output from this statement:

 

                if(status != asynSuccess) {

                    asynPrint(pasynUserSelf, ASYN_TRACE_ERROR,

                          "%s:%s: error using readout command status=%d, nRead=%d, eomReason=%d\n",

                          driverName, functionName, status, (int)nread, eomReason);

                }

 

Since you don’t see that it seems like by pasynOctetSyncIO->writeRead() returned asynSuccess, even though it did not read the expected number of characters.  That seems strange.

 

Mark

 

 

 

Hello, J. Sullivan:

We have a customized DCS6 (Detector control system for up to 6 detector modules ) with 5 Dextris Mythen detector modules. We are using ADMythen module to control those 5 Detectors. The result is as follows.

Figure 1．Read back results

It can be seen the controlling part works well, but the read back data is all 0 which is not reasonable.

We tried to print the debug. The result is like figure 2.

It can be seen “nread” never equals “nread_expected”. So we believe it happens in “acquisition” parts (from line 853 to line 947). But we have not find the actual line.  Any suggestions?

 

Thank you!

---Ying