MP230 'Review the SLA for delivery and completion for SMETS1 firmware'

The Data Communications Company (DCC) Systems have a limit to the amount of firmware images that can be processed meaning that if a significant volume of large firmware images needs to be processed, they must be spread over several days. Some Electricity Smart Metering Equipment (ESME) have a very large firmware image, in excess of 750kB that requires being broken down into multiple images. The current processing of these images is possible at maximum capacity of 12,000 images a day.

The solution clarifies that if a firmware image for a SMETS1 Device is larger than 750kB and the User wants to send a batch larger than 500 images per day, the User needs to contact the DCC through the DCC Service Desk to coordinate and agree on a delivery schedule. Once this delivery schedule is agreed, the five-day TRT will still apply from the point of sending each batch.

The proposed change to the legal text for this is placed in SEC Appendix E ‘DCC User Interface Services Schedule’ (UISS).