Quenstion IEC104 Protocol

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interelec
Posts: 27
Joined: Wed May 27, 2015 7:52 am

Quenstion IEC104 Protocol

Post by interelec »

Hi,
I am testing for IEC104 Communication with Wincc OA v3.5

The OA have to communicate with Old RTU(SAT AK1703). The I/O is only DI,AI. DI is 16 Single-point indication. AI is Measured value short floating point.
I think 16 single-point indication is not IEC Standard. so, I'm not sure Wincc OA can support 16 single-point indication(TI137).
Does the Wincc OA support 16 single-point indication ?

And If the event in RTU was occurred during the communication error between wincc oa and RTU. then how can get the lost event after recovery ?
I've been waiting for about 10 minutes, but the event has not been updated.
How can I set the event will be updated periodically?

interelec
Posts: 27
Joined: Wed May 27, 2015 7:52 am

Re: Quenstion IEC104 Protocol

Post by interelec »

Hi,
I tested the IEC104 Protocol with SAT RTU today. and the Wincc OA supports the TI 137, TI 138 data formats. it is cleared.
But, I do not yet know how to set up receiving periodic communication data via IEC104 protocol in Wincc OA.
If you have any idea, please help me.
Thanks.

Gertjan van Schijndel
Posts: 634
Joined: Mon Aug 02, 2010 10:37 am

Re: Question IEC104 Protocol

Post by Gertjan van Schijndel »

To my knowledge our IEC driver only receives data, it does not tell the RTU how oft it wants to receive data.
During a connection loss the RTU should buffer the data and sent it after connection establishment or the general query.

Perhaps your local/global list is not properly configured.

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