NSD ABSOCODER NCW-3DHIPLC Specifications & Instruction Manual page 135

●Complement (DSCP value)
A packet priority allocation is classified for each DSCP value by a definition is called "PHB( Per-Hop Behavior)".
Default values for general EtherNet and EtherNet/IP are shown below
PHB
■General Ethernet definition
AF(Assured
Forwarding)
EF(Expedited Forwarding)
■EtherNet/IP CIP definition
CIP UCMM
CIP Transport Class 3
All Other EIP Encapsulation
Message
CIP Transport Class
0/1
*1: PHB for NCW-3DHIP
DSCP value
Bit5-3: high priority class
Bit2-1: packet discard rate
Bit0: Standard / Test
AF11 001 01 0b(10)
AF12 001 10 0b(12)
AF13 001 11 0b(14)
AF21 010 01 0b(18)
AF22 010 10 0b(20)
AF23 010 11 0b(22)
AF31 011 01 0b(26)
AF32 011 10 0b(28)
AF33 011 11 0b(30)
AF41 100 01 0b(34)
AF42 100 10 0b(36)
AF43 100 11 0b(38)
101 11 0b(46)
011 01 1b(27)
Low(0) 011 11 1b(31)
High(1) 101 01 1b(43)
Scheduled(2) 101 11 1b(47)
Urgent(3) 110 11 1b(55)
Description
If the first 3 bits are larger, the priority will
become higher.
If the last 3 bits are larger, the discard priority will
become higher.
It means the highest priority packet.
CIP Explicit message transmitting *1
Unrecommanded to use
CIP I/O (CIP Implicit message)
transmittung*1
For CIP Safty I/O (CIP Implicitmessage)
transmitting
For CIP I/O (CIP Implicit message) transmitting
For CIP Motion transmitting
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