Experimental Physics and
Industrial Control System

Hi,

 

I have an unusual issue I haven’t seen before. I have a mode selector, activation bo, directed through a fanout (single output with SELL), which finally sends out a read command, like this:

 

 

record(mbbo, "$(D):MODE_CMD_SWEEP"){

    field(ZRST, "Fullsweep")

    field(ZRVL, "0")

    field(ONST, "Fullsweep4") <- SELECTED

    field(ONVL, "1")

    field(TWST, "Simulsweep4")

    field(TWVL, "2")

}

 

#User presses this to execute a scan, stays high for 0.5s

record(bo, "$(D):SWEEP_CMD_EXSC"){

    field(ZNAM, "Idle")

    field(ONAM, "Sweep")

    field(HIGH, "0.5")

    field(VAL, "0")

    field(FLNK, "_$(D):SWEEP_EXSC")

}

 

record(fanout, "_$(D):SWEEP_EXSC"){

    field(SELM, "Specified")

    field(SELL, "$(D):MODE_CMD_SWEEP")

    field(LNK0, "_$(D):SWEEP_CMD_DBG")

    field(LNK1, "_$(D):SWEEP_CMD_EXSC") <- SELECTED

    field(LNK2, "_$(D):SWEEP_CMD_SIM")

}

 

record(calcout, "_$(D):SWEEP_CMD_EXSC"){

    field(DTYP, "stream")

    field(INPA, "$(D):SWEEP_CMD_EXSC")

    field(INPB, "$(D):PAT_CSET_SWEEP")

    field(CALC, "A")

    field(OOPT, "Transition To Non-zero")

    field(OUT, "@sram.proto fullsweep4($(D)) $(HOST)")

}

 

The protocol file entry looks like this:

 

fullsweep4{

    ReadTimeout=2000;

    InTerminator="\r\0\n\r\0\n>";

    out "fullsweep4 c %(_\$1:SWEEP_CMD_EXSC.B)#x";

    in "\r\0\n\r\0\nChip: 0\r\0\n# of Events: %(\$1:EVT_RD_CHIP0)d\r\0\nChip: 1\r\0\n# of Events: %(\$1:EVT_RD_CHIP1)d\r\0\nChip: 2\r\0\n# of Events: %(\$1:EVT_RD_CHIP2)d\r\0\nChip: 3\r\0\n# of Events: %(\$1:EVT_RD_CHIP3)d";

}

it wants a message of the form:

 

Chip: 0

# of Events: 131072

Chip: 1

# of Events: 131072

Chip: 2

# of Events: 131072

Chip: 3

# of Events: 131072

 

> 

 

But, the last record (calcout) _SWEEP_CMD_EXSC only fires every other time I activate the bo SWEEP_CMD_EXSC, and wireshark confirms it’s only sending out the inquiry every other click as well. Setting TPRO shows:

 

epics> ca:daykin@diag-cam: dbProcess of '_SRAM_TEST:SWEEP_CMD_EXSC'

cbLow: dbProcess of '_SRAM_TEST:SWEEP_CMD_EXSC' <- Nothing actually happened, nothing in wireshark, readback records don’t update

 

ca:daykin@diag-cam: dbProcess of '_SRAM_TEST:SWEEP_CMD_EXSC'

cbLow: dbProcess of Active '_SRAM_TEST:SWEEP_CMD_EXSC' with RPRO=0 <- Record fired correctly, readback records update

 

What does this indicate? What is RPRO doing?

 

Thank you,

Evan