Eurotherm Recorder's Communication via MODBUS TCP

Y

Thread Starter

yannis

I have a number of Eurotherm 6100 recorders that communicate
via MODBUS TCP into a host computer. This computer is connected via Ethernet into a server that is running an application db. Until recently everything has been working OK. The values from the recorders were transmitted to the top end db and displayed OK. Recently and at random time intervals some signals are not displayed in the top end db for a max time of 20 secs and then are displayed again OK.

Any ideas please?
 
This is very likely a Eurotherm software/firmware issue.

Eurotherm has its own Schneider sponsored 'community-powered support' forum where the green banner in the corner says "Eurotherm employees are here to help" which is not always the case with company hosted fora.

Since there hasn't been a reply in the week since it was posted, you might try Eurotherm's forum at
https://getsatisfaction.com/eurotherm/topics

You might have to register to post.
 
> This is very likely a Eurotherm software/firmware issue.

David, thanks.

Software has not been touched since this problem starting manifesting itself. After some investigation that i did not post here so that i was not over-complicating the problem, I am coming to the conclusion towards the Eurotherm OPC server software.

BUT

is there a situation that an OPC server would suddenly not work? I am pinning it down the "Time out" parameter of the Modbus TCP OPC server software.

BUT

why would suddenly not work for 20 secs and then work again?
I'm in a place that i can not just go and change this parameter to a higher value to see if this problem can be alleviated...
 
I attach an extract from the log file:

04:46:36.427 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.427 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC15.InstrumentData.Time" address 24 (0x18) - length 8
04:46:36.536 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.536 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC4.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:36.567 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.583 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.583 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC10.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:36.802 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.802 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC17.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:36.848 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.848 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC18.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:36.942 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.942 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC16.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:36.989 16/01/2015 : System Debug : Comms Timeout on port BSA
04:46:36.989 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC2474.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:37.880 16/01/2015 : System Debug : Timeout reading MODBUS tag "BSA.REC19.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.228(192.168.111.228):502 - Connection timed out attempting to connect to remote host "192.168.111.228"
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.223(192.168.111.223):502 - Connection timed out attempting to connect to remote host "192.168.111.223"
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.226(192.168.111.226):502 - Connection timed out attempting to connect to remote host "192.168.111.226"
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.224(192.168.111.224):502 - Connection timed out attempting to connect to remote host "192.168.111.224"
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.221(192.168.111.221):502 - Connection timed out attempting to connect to remote host "192.168.111.221"
04:46:38.348 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.225(192.168.111.225):502 - Connection timed out attempting to connect to remote host "192.168.111.225"
04:46:38.520 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC16.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:38.520 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC18.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:38.520 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.227(192.168.111.227):502 - Connection timed out attempting to connect to remote host "192.168.111.227"
04:46:38.364 16/01/2015 : System Error : Timeout while waiting for connecting to 192.168.111.222(192.168.111.222):502 - Connection timed out attempting to connect to remote host "192.168.111.222"
04:46:38.598 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC4.InstrumentData.Time" (address 24 - length 8)
04:46:38.598 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC17.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:39.239 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC19.InstrumentData.Time" (address 24 - length 8)
04:46:38.598 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC15.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:38.630 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC2474.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:38.989 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC16.MathsConfig.Math83.SpanHigh" (address 25557 - length 57)
04:46:38.989 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC4.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:38.989 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC15.InstrumentData.Time" (address 24 - length 8)
04:46:39.270 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC10.InstrumentData.Time" (address 24 - length 8)
04:46:39.645 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC2474.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:39.645 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC16.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:39.645 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC18.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:39.645 16/01/2015 : System Debug : No return message for MODBUS read of tag "BSA.REC15.Group.Grp1.TextLength" (address 42239 - length 1)
04:46:39.645 16/01/2015 : System Warning : Unsuccessfully tried 3 times to read MODBUS tag "BSA.REC2474.Group.Grp1.TextLength" address 42239 (0xA4FF) - length 1
 
Top