Experimental Physics and
Industrial Control System

 

Hello all

Im debugging an EPICS asyn IOC which was working fine until now. The st.cmd of the IOC has a line which loaded asynRecord.db:

dbLoadRecords("$(ASYN)/db/asynRecord.db","P=$(DEV),R=asynEth,PORT=E873_ETH,ADDR=0,OMAX=256,IMAX=256")

and caput caget BL:H:EQ:asynEth.IFMT 1 (Hybrid)

caget BL:H:EQ:asynEth.BINP

in the IOC machine returned an array of numbers without any problem. However, it is recovering an array from a file much alrger than 256, so i suppose it just threw parts of the file away.
We wanted to get more of the file, so we raised IMAX to 350000 and defined the env variable EPICS_CA_MAX_ARRAY_BYTES=15728645. SO we got the error

caget MGN:A:E873:DIAG:A:asynEth.BINP MGN:A:E873:DIAG:A:asynEth.BINP 350000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0  (the zeroes continue)

So we tried lowering IMAX to 16406 but still the error persisted:

CA.Client.Exception............................................... MGN:A:E873:DIAG:A:asynEth.BINP 16406 0 0 0 0 0 0

does anyone know if we are doing something wrong or forgetting something? I dont think memory should be the problem here... Where do these "max bytes=16408" come from?