Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set - Manual (Page 491)

Section 9A
Operator Interface
9A-24
Connect the video signal cable to only one interface assembly.
Construct the cable shown in Figure 9A.15 to jumper the video signal to
the second interface assembly.
ATTENTION: Use PAL to select which keyboard is the active
keyboard ($KYB_SEL) in conjunction with some external
device hardware. PAL should allow an operator to connect his
keyboard, and lock out other keyboards from access to the I/O
ring. Other keyboards can than be connected to the ring for
monitoring but their keyboard inputs will be ignored. Failing to
do this check will allow the connection of more than one
functioning operator panel at one time which, in some
applications, can be dangerous to equipment or personnel.
Use the following procedure to connect multiple removable operator panel
interface assemblies.
1. Connect the video signal to both interface assemblies. This is
accomplished by connecting the video signal from the processor to
one interface assembly and jumping the video signal out of CN4 on
the interface assembly to the video connection on the second interface
assembly. The total video signal cable length must be less than 100
feet (including from processor to interface assembly, between
interface assemblies, and to portable operator panel).
Figure 9A.15
Connecting Multiple Removable Operator Panel Interface Assemblies
Connect Second Interface
Assembly Video
(37 pin D Shell has pins)
Connect Video Cable C09
from 9/Series Processor
Indicates twisted pairs
22
23
25
24
26
9
10
11
12
13
14
15
1
2
3
4
5
6
7
8
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
21
Interface Assembly 1 Interface Assembly 2
Construct this cable to connect video signal between two
interface assemblies. We recommend using Belden 9503
for lengths less than 50 ft.. One end of cable will have a
37 pin D shell with sockets, the other end will have a 15
pin D shell with sockets.