Maximum PDU size of a notification frame

Dear Kurumi,
We are trying to create a notification using Gurux.DLMS.C. What I observe is that after certain number of length, code generates 2 packets: e.g.
7E A8 86 03 41 13 A7 8B E6 E6 00 DB 08 47 4F 45 30 30 30 30 30 72 30 00 00 00 10 00 9D 56 1E 4D D5 0E 99 27 8E 29 E7 26 0D 60 E4 B2 09 18 AB 5A 5D 06 FF 06 18 34 5B 83 6B 2E 60 35 53 E6 BA F4 86 0C 92 8A 85 56 1D DC 9E 50 84 45 30 6C 8A DD 18 02 94 6E 8A F7 78 E5 88 10 2F 9F 50 6A 16 E0 6A 63 45 1C 90 7B 85 F7 20 CA 20 E7 12 3C B4 48 AF 43 F1 0B C7 9B 4D 2C 7B 9D FA 17 94 7E 5A D7 8D 64 E7 52 80 FA 7B 7E
You will notice that it consists of 2 packets.
Is there any limit in the DLMS standard itself or is it controllable using some configuration/ function?

Regards,
Aashish