Re: modbus TCP

[Mark Rivers via Tech-talk <tech-talk@aps.anl.gov>]

Hi,


Sorry I did not see your second message before I answered your first one.


The st.cmd looks OK to me.  Please send the complete output when the IOC boots.


Mark


________________________________
From: Tech-talk <tech-talk-bounces@aps.anl.gov> on behalf of liuxiaomin via Tech-talk <tech-talk@aps.anl.gov>
Sent: Wednesday, September 22, 2021 1:45 AM
To: tech-talk@aps.anl.gov
Subject: modbus TCP


Hi,

  I am trying to use modbus on debian system to control device,

The st.cmd files is as follows:

drvAsynIPPortConfigure("CAT1","192.168.1.163:502",0,0,1)

modbusInterposeConfig("CAT1",0,2000,0)

drvModbusAsynConfigure("CAT_AI1R","CAT1",0,3,0008,2,0,100, "CAT")

The db files is as follows:

record(ai, "$(DEVNAME):IN1") {

    field(DTYP,"asynInt32")

    field(INP,"@asynMask(CAT_AI1R 0 16)INT16")

    field(PREC,"1")

    field(SCAN,"I/O Intr")

}



When I execute the st.cmd file,it shows the following error:



drvStreamInit: Warning! STREAM_PROTOCOL_PATH not set. Defaults to "."

TEST:CAT1:IN1 devAsynInt32::initCommon connectDevice failed asynManager:connectDevice port CAT_AI1R not found



How can I solve this problem?

Thanks,

Xiaomin





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