Starting Your Processor
Chapter 5
5-13
Figure 5.10
Example of 1Slot Addressing
01
23
45
67
01
23
45
67
13499
I/O group 1
address
1 1 1
input
rack
I/O group
I/O group 1
address
1 2 1
I/O group number
rack 1
rack 2
Using 32-Point I/O Modules
32-point I/O modules provide 32 input or 32 output terminals. 32-point
I/O modules use two full words in the input or output image table. In
1-slot addressing mode, 32-point modules must be placed in a
complimentary fashion; a 32-point input module must be next to any
output module and vice versa.
If 32-point modules are not placed in a complimentary fashion when in
1-slot addressing mode, the PROC RUN LED indicator will continuously
blink green and the processor will not operate.
Important: When addressing a block transfer module, it must be
addressed by the lowest group number that it occupies and at slot 0. For
example: a 2-slot block transfer module in rack 1, groups 2 and 3 (slots 3
and 4) would be addressed (by rack-group-slot) at location 120.
