2VPL-PX15
Local . media . header
(Ethernet, etc.) Internet
(IP) . header Datagram
(TCP) . header
2 bytes 8 bytes
PJCP header PJCP data
1
2
0 234567
1
10 234567 10 234567 10 234567
(Bit position)
34
Version
CHECK SUM
Reserved
COMMAND
END CODE
START CODE ITEM NUMBER
DATA
2-2. Format
The PJCP is installed in the TCP. Datagram of the PJCP consists of the Internet (IP) header, the datagram
(TCP) header and the PJCP header. Construction of the PJCP headers is shown below. The PJCP header
is followed by the PJCP data.
Fig. 2 Sequence in the structure of the PJCP headers
Fig. 3 PJCP format

2-2-1. PJCP Header

The PJCP header consists of 2 bytes of the version (8 bits) and reserved (8 bits).
Version
This means the PJCP version. Set 01h (version 1).
Reserved
This area is not used in version 1. Set 00h.