Assembly and Installation
Chapter 3
316
Figure 3.15
Lithium Battery Installation
10120bI
10680I
-
+
Orientation
-
+
Lithium
Battery
Battery Contacts
Figure 3.16
Keying Band Installation
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
Keying
Bands
Backplane
Socket
10112-I
Keying Bands
Plastic keying bands (Cat. No. 1777-RK), shipped with each I/O Chassis, can be
inserted into the top backplane sockets of the I/O Chassis (Figure 3.16). they
are used to ensure that the correct I/O Modules are installed in the correct
Module slots. They are also used to key the Module slot for the Mini-PLC-2/15
Processor. Needle-nose pliers can be used to install the keying bands. The
numbers to the right of the backplane sockets serve as a guide for positioning
the keying bands. The keying band positions for the 1771 I/O Modules and
Processor Module are listed in Table 2-1.
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