Rockwell Automation 1771-QA Stepper Positioning Assembly User Manual - Manual (Page 21)

2–11 Assembly and Installation
Publication 1771-UM002A–EN–P – May 2000
The module is slotted in two places on its rear edge. The position of
the keying bands on the backplane connector must correspond to the
slots to allow insertion of the module so that only the desired module
will fit in this slot.
Refer to Figure 2.4. Snap the keying bands on the upper backplane
connectors between these numbers printed on the backplane:
Stepper Controller
2 and 4
8 and 10
Expander Module
8 and 10
22 and 24
Needle-noise pliers can be used to insert or remove keying bands.
Figure 2.4
Keying Diagram
2
4
6
8
1 0
1 2
1 4
1 6
1 8
2 0
2 2
2 4
2 6
2 8
3 0
3 2
3 4
3 6 2
4
6
8
1 0
1 2
1 4
1 6
1 8
2 0
2 2
2 4
2 6
2 8
3 0
3 2
3 4
3 6
Keying
Bands
10513
Stepper Expander
Controller Module(s)
Compatibility
An I/O chassis that contains a stepper controller module may not
contain another “master” intelligent I/O module.
Module Specifications
The pulse output expander module specifications and stepper
controller module specifications are listed in Appendix A.