A-Code: the most common in industrial controls. Also called Micro, or Micro-DC
B-Code: inverted keyway from A-code. Used for Profibus-DP and on Grundfos DME pumps. (part number 96440447 or 96440448
C-Code: also called Micro-AC use used with AC sensors.
D-Code: network communication up to 100Mbs
L-Code: power for IO-Link master blocks
X-Code: Ethernet up to 10Gbs
