RV3.0

Modbus address register exchange between Melsec-Q series PLC and ME96SSHA-MB Power meter

2 posts in this topic

Please assist me with the following; regarding the ME96SSHA-MB Power meter data transition with Melsec-Q series PLC;

We acquire to read various values on dedicated Modbus storage address registers at the simultaneous into a Melsec-Q series PLC via Modbus (TCP or RTU)  for calculation purposes.

Naturally, since the reading of these variables are to provide accurate instantaneous results, it is a requirement that these values are to be read at one scan.

 ME96SSHA-MB.thumb.png.7737ce4f80eaa795c4

However, as can be seen below, there is a gap in address register range – of which, if all of these are scanned simultaneously, yields an exception error when read.

This error is only avoided by scanning these data sets separately – which is not ideal for our application – since accuracy in calculations is imperative.

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