Rockwell Automation 8520 9/Series CNC Integration Maintenance Manual Documentation Set User Manual
Page 499

Section 9A
Operator Interface
9A-32
Serial Interface Connector CN56F
The push-button MTB panel has an optional serial interface connector
(CN56F). This connector provides an external interface port for a
peripheral’s RS 232 or RS 422 interface cable. It is interfaced with Port B
(connector J7) on the motherboard/system processor boards by cable C07.
Refer to page 7A-22 for additional information on cable C07.
Connector CN56F (8520-D25FS) is a 25 pin D-shell connector that is
connected to one end of cable C07. This connector is then mounted on the
left side of push-button MTB panel under the connector cover.
Figure 9A.18 shows the location and mounting instructions for connector
CN56F.
Figure 9A.18
Push-Button MTB Panel Optional Connector CN56F
Spacer alignment
ridge
Push-Button
MTB Panel
D-sub connector
Spacer alignment ridge
Spacer
Screw
Toothed
washer
11268-I
Important: The two screws with their corresponding spacers and the serial
port cover are included with the push-button MTB panel.