snap ethernet-based i/o units protocols and programming guide

APPENDIX A: SNAP ETHERNET-BASED BRAIN MEMORY MAP
Starting Address Length Type Description
FFFF F03A 8210 4 UI Port B, position 0: End-of-message characters.
(Additional ports follow in order on even 10 hex boundaries.)
FFFF F03A 8400 1 UI Position 0: Module mode of operation (0 = 2-wire; 1 = 4-wire)
FFFF F03A 8401 1 UI Position 1: Module mode of operation (0 = 2-wire; 1 = 4-wire)
Last valid address for this area: FFFF F03A 840F
(Additional modules follow in order.)
Serial Module and Port Numbers
For quick reference, the following table shows serial modules and ports, their default IP port
numbers, and their starting memory map addresses, beginning with FFFF F03A 8000.
Module Port Default
IP Port
Memory Map
Address
Module Port Default
IP Port
112 SNAP Ethernet-Based I/O Units Protocols and Programming Guide
Memory Map
Address
0 A 22500 8000 8 A 22516 8100
0 B 22501 8010 8 B 22517 8110
1 A 22502 8020 9 A 22518 8120
1 B 22503 8030 9 B 22519 8130
2 A 22504 8040 10 A 22520 8140
2 B 22505 8050 10 B 22521 8150
3 A 22506 8060 11 A 22522 8160
3 B 22507 8070 11 B 22523 8170
4 A 22508 8080 12 A 22524 8180
4 B 22509 8090 12 B 22525 8190
5 A 22510 80A0 13 A 22526 81A0
5 B 22511 80B0 13 B 22527 81B0
6 A 22512 80C0 14 A 22528 81C0
6 B 22513 80D0 14 B 22529 81D0
7 A 22514 80E0 15 A 22530 81E0
7 B 22515 80F0 15 B 22531 81F0