
T400 Controller Facilities Manual
667/EB/20200/000 Page 15-4 Issue 9
15.7 PORT ALLOCATION
Port numbers are allocated as per the following table:
Board Type Port No Port Type Connector name
CPU 0 INPUT PLE
CPU 1 INPUT PLE
CPU 11* OUTPUT PLC
Expansion I/O (a) INPUT PLB
Expansion I/O (b) INPUT PLC
Expansion I/O (c) OUTPUT PLE
Expansion I/O (d) OUTPUT PLD
SDE/SA 6 INPUT PLB
SDE/SA 7 INPUT PLB
SDE/SA 8 INPUT PLC
SDE/SA 9 INPUT PLC
Where a, b, c and d are:
Expansion
I/O Board 0
Expansion
I/O Board 1
Expansion
I/O Board 2
a2 6 10n/a
b 3 7 11* or n/a
c4 8 n/a10
d 5 9 n/a 11*
The Expansion I/O Board no. is indicated on the rotary switch on the front of each
board.
* Port 11 can be defined as either 4 bits of output (on the main CPU board) or 8
bits of input or output (using Expansion I/O board 2).
The following figures will assist when allocating the ports:
Figure 15.1 - BLOCK DIAGRAM OF MAIN PROCESSOR BOARD
Figure 15.2 - PCB POSITIONS AND LAYOUT OF PHASE DRIVER
RIBBON CABLES
Figure 15.3 - REAR VIEW OF PCB I/O CONNECTIONS (T400 LARGE
SHOWN)
Figure 15.4 - TERMINAL BLOCKS IN SMALL CONTROLLER
Figure 15.5 - TERMINAL BLOCKS IN LARGE CONTROLLER
Figure 15.6 - TERMINAL BLOCKS IN LARGE CONTROLLER (HONG
KONG)
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