ROC driver polling issues

Ignition Modules Driver Modules
1

Hi there,

We have an Ignition Edge installation with the EFM Emerson ROC driver installed. We’re noticing errors when polling certain tags from an FB107:

TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Staling tag due to failed poll Tlp [pointType=DynamicPointType [pointType=3, pointTypeDescription=Analog Inputs, pointTypeAbbreviation=AIN], logicalNumber=28, parameterNumber=14, tlpData=null, dataBytes=0x03 0x1C 0x0E ]
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Error - Date: Wed Jul 05 16:51:30 CDT 2023
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Error - Response: 0xF0 0xF0 0x06 0x01 0xFF 0x03 0x04 0xB4 0x07 0x0F 0xC2
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Error - Request Message: 0x01 0x03 0x1C 0x0E
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Got a polling error: ErrorCode: Invalid Point Type. ByteInError: 7
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Response Data: 0x04 0xB4 0x07
TlpPoller 05Jul2023 15:51:30 [‘FB107’ localhost:2012] Request Data: 0x01 0x03 0x1C 0x0E
TlpPoller 05Jul2023 15:51:29 [‘FB107’ localhost:2012] Error - Details: ErrorCode: Invalid Point Type. ByteInError: 7

This one in particular has a TLP of “L28/T03_P14”. Is there perhaps something incorrect about in the templates/poll groups/definitions files? Our templates/poll groups only contains this TLP to narrow things down.

2

You’re going about it the right way. If you poll this same TLP via another tool like ROC Link - is the data type the same, correct, and can it be polled?

3

Thanks Wes. Turns out that L28 wasn’t programmed in the Floboss, so that started polling once it was added.

But we still have a similar issue that isn’t easily reproducible where polling doesn’t start on some (or even all) TLPs. We can mostly correct this issue by disabling/enabling the device (in Ignition Gateway → OPC UA → Device Connections), but sometimes a reboot/power cycle of the edge node is required. To note, we’re connecting to the FB107 via a serial-to-network proxy (ser2net).

4

If this is periodic and the same TLPs are being polled - I’d suspect an issue with ser2net. We’ve worked with this some and have noticed issues with it in terms of consistency. I know we have some customers using Moxa Terminal Servers instead: Terminal Servers - Industrial Serial Device Servers | Moxa

There are a lot of other terminal servers on the market as well which I suspect will be more stable than ser2net.