ACR&Artex Float-Free 406 Memory Capsule - Manual (Page 34)

30 Y1-03-0202 Rev. E
13.5. New Subnet Mask
Bytes 10 – 13 are the new subnet mask arranged so the MSB of the 4-
byte subnet mask is in byte 10 and the LSB is in byte 13. Below is an
example of a new subnet mask of 255.255.255.252:
Byte
Position
Decimal Notation Hex Notation
10 255 0xFF
11 255 0xFF
12 255 0xFF
13 252 0xFC
Note that the subnet mask should be sent with the IP address even if
only the IP address is being changed.