#CONVERT MAC ADDRESS TO HEXADECIMAL SERIAL NUMBER#
#CONVERT MAC ADDRESS TO HEXADECIMAL BLUETOOTH#

This is combined with 12 organizational bits to form EUI-48 addresses. MA-S block size, or MAC Address - Small, was previously called OUI-36. That would be a total of 2 20 = 1 million MAC addresses. The last 20 bits will take all variations. This MAC address block can contain 2 20 = 1 million MAC addresses.Įxample: The MAC address range D4:BA:BA:A0:00:00 to D4:BA:BA:AF:FF:FF is a medium block ML-M that is assigned to Actiontec devices. In some cases, it can be combined with 36 organizational bits to form EUI-64 addresses.

This is combined with 20 organizational bits to form EUI-48 addresses. MA-M block size, or MAC Address - Medium, is a 28-bit identifier. That would be a total of 2 8 x 2 8 x 2 8 = 2 24 = 16 million MAC addresses. The last 3 bytes would take all variations. The range of this block is from FA:8F:CA:00:00:00 to FA:8F:CA:FF:FF:FF. This MAC address block belongs to Google. This MAC address block can contain 2 24 = 16 million MAC addresses.Įxample: The MAC address FA:8F:CA:00:11:11 is a large block ML-A that is assigned to Chromecast devices. MA-L block size, or MAC Address - Large, was previously called OUI (Organizationally Unique Identifier).

There are 3 MAC address block sizes: MA-L, MA-M and MA-S. The last 3 bytes 56:78:9E correspond to the NIC. The first 3 bytes 00:12:34 correspond to the OUI. The NIC address is the next 3 bytes.Īs an example, let us look at this MAC address 00:12:34:56:78:9E. XX.XX.XX.XX.XX.XX OUI address and NIC address MAC addresses can also use dots as delimiter. MAC addresses can also be written using hyphen as delimiter. You can also group 4 bits into 1 hexadecimal digit, so 48 bits = 12 hexadecimal digits.īy default, a MAC address is written in this format using colons as delimiter. If you recall middle school or high school mathematics, 8 bits = 1 byte. Binary, Decimal and Hexadecimal number systemsīefore we start, here is a table showing the decimal, binary and hexadecimal number equivalents.Ī MAC address consists of 6 bytes or 12 hexadecimal digits or 48 bits. This is done by by plugging the network card using an ethernet cable or connecting wirelessly to a Wi-Fi network or via Bluetooth.

#CONVERT MAC ADDRESS TO HEXADECIMAL BLUETOOTH#

In the past, MAC addresses were also called Ethernet addresses, but these days, MAC addresses also apply to wireless (Wi-Fi) and Bluetooth networks.Ī MAC address is associated with the Network Interface Controller (NIC), which makes the physical connection to the network. Every network card (Ethernet or wireless) or Bluetooth device comes with a preset MAC address and cannot be changed. How many MAC addresses exist worldwide?Ī Media Access Control (MAC) address is a hardware identification hexadecimal number that uniquely identifies each device on a network.Binary, Decimal and Hexadecimal number systems.MACstring := INSERT(MACstring,MID('0123456789ABCDEF',1,(DecNumb er AND 16#000F)+1),J+1) Īnd, there are ways to make it even simpler. Or even, back in the main caller with the MAC address array:ĬharVal := CONCAT(charVal,MID('0123456789ABCDEF',1,(DecNumber AND 16#000F)+1)) I wonder if you can replace all of that withĬharVal := MID('0123456789ABCDEF',1,(DecNumber AND 16#000F)+1) ĬharVal := MID('0123456789ABCDEF',1,((DecNumber AND 16#00F0)/16)+1) īut it depends if MID returns the same type as a single element of the charVal array. (*AND's w/ 1111 0000 to process the most significant byte*) (*AND's w/ 0000 1111 to process the least significant byte*) It confused me at first, so I rewrote it differently at the bottom (for others, cuz I care): My IT guy wanted that in a string delimited by a hyphen. The function block that I can't edit, spits out the MAC address as an array of bytes in decimal representing the MAC address. But I do realize that comments are also for myself and for the next guy when I die. We are an OEM.ĭisclaimer: Most unlike every single plc programming job that I have ever had, No One gets to see the code. The IT/PC Programmer at work requested this information to help solve a production problem.

#CONVERT MAC ADDRESS TO HEXADECIMAL SERIAL NUMBER#

I was using a function provided to me by wago to read the serial number and MAC address of the plc. I actually solved this, but I thought this info may help others.

Convert mac address to hexadecimal