Rockwell Automation 1785-LTx,D17856.2.1 Classic PLC-5 Programmable Controllers Users Manual - Manual (Page 49)

Assigning Addressing Modes,
Racks, and Groups
Chapter 4
4-7
32-Point I/O Modules
To use 32-point I/O modules with 1-slot addressing, you must install, as a
pair, an input module and an output module in two adjacent slots (even/odd
pair) of the I/O chassis, beginning with I/O slot 0. If you cannot pair the
modules in this way, one of the two slots of the pair must be empty. For
example, if I/O slot 0 holds a 32-point input module, I/O slot 1 must hold
an 8-, 16-, or 32-point output module (or a module using the backplane for
power only); otherwise the slot must be empty.
I O I I O I O O
2 3 0 1
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
4 5 6 7
Word #
Word #
Output Image Table
Input Image Table
I/O Group Designation
Input/Output Designation
I/O Chassis with 1ĆSlot Addressing
Slot 0
Input Module
I/O Group 0, 1
Slot 1
Output Module
I/O Group 0, 1
000
000
001
001
Output ImageĆTable Words Corresponding to I/O Groups 0 and 1.
Input ImageĆTable Words Corresponding to I/O Groups 0 and 1.
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
17 16 15 14 12 10 07 06 05 03 02 01 00 04 11 13
1ĆSlot I/O Group with 32Ćpt I/O Modules
14258