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Subject: multiple pollgroup with s7nodave
From: David Michel <dmichel76@googlemail.com>
To: EPICS mailing list <tech-talk@aps.anl.gov>
Date: Fri, 16 Oct 2015 09:52:40 +0100

Hi All,

We have an issue with trying to get multiple poll groups talking to a Siemens S7 PLC using s7nodave:

According to the documentation (http://oss.aquenos.com/epics/s7nodave/docs/1.0.0/manual.html), it should possible to specify a pollgroup using the PG parameter:

"In order to make a record be processed in a poll group, the SCAN field of the record has to be set to I/O Intr. If you want to use a different poll group than the default poll-group, you can use the PG parameter to specify the poll group to use. The PG parameter can be used with all input records to specify a poll group for the record. It is only valid, if the SCAN field of the record is set to I/O Intr. Example: @myPLC(PG=1s) IW64"


But I get this error:

2015/10/15 17:50:14.252 HJ_CRYO:PID_TEMP_KP S7nodaveRecord::initRecord Invalid device parameter "PG" in device address "@HJ_CRYO(PG=fast) DB100.DBD236 float".
HjCryo: //usr/local/epics/support/boost_1_57_0/boost/optional/optional.hpp:1002: boost::optional<T>::pointer_type boost::optional<T>::operator->() [with T = S7nodaveRecordAddress, boost::optional<T>::pointer_type s7nodaveRecordAddress*]: Assertion `this->is_initialized()' failed.
$Aborted (core dumped)

Anyone encountered this before?


s7nodave version is 1.0.2 and st.cmd config and record are as follows:

s7nodaveConfigureIsoTcpPort("HJ_CRYO","192.168.43.28",0)
s7nodaveConfigurePollGroup("HJ_CRYO","default",5,0)
s7nodaveConfigurePollGroup("HJ_CRYO","fast",1,0)

record(ai, "$(DEVICE):PID_TEMP_KP") {
  field(SCAN, "I/O Intr")
  field(DTYP, "s7nodave")
  field(INP, "@HJ_CRYO(PG=fast) DB100.DBD236 float")
  field(EGU, "")
  field(PREC, "2")
}


Thanks,
David




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