Rockwell Automation 1785-BCM_BEM, D17856.5.4 PLC-5 Backup Communication Module User Manual - Manual (Page 52)

Installing Your 1785-BEM Module
Chapter 4
4-9
Electrostatic Discharge Damage
ATTENTION: Under some conditions, electrostatic discharge
can degrade performance or damage the module. Observe the
following precautions to guard against electrostatic damage.
Wear an approved grounded wrist strap or touch a grounded object to
discharge potential before handling the module.
Do not touch the backplane connector or connector pins.
If you configure or replace internal components, do not touch other
circuit components inside the module. If available, use a static-free
work station.
When not in use, keep the module in a static-shielded bag.
Keying the I/O Chassis
Use the plastic keying bands, shipped with each I/O chassis, to key the
chassis slot to accept only the 1785-BEM module.
The module circuit board is slotted in two places on the rear edge. The
position of the keying bands on the backplane connector must correspond
to these slots to allow insertion of the module. You can key any connector
in an I/O chassis to receive this module except for the left-most connector
which is reserved for processor modules. Place keying bands between the
following numbers that are labeled on the backplane connector
(Figure 4.5).
Figure 4.5
Keying Positions
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
Keying bands
11680I