Rockwell Automation 2706-M1 MESSAGEVIEW 421 SER.A INSTALLATION DATA User Manual
Installation data, Description equipment setup

Publication 2706-5.1
MessageView 421 Display
Terminals Series A: RSĆ232
Port Adapter
(Part No. W77128-144-52)
The RS-232 Port Adapter is connected to the RS-232 port of a
MessageView terminal Series A. It transforms the terminal into a
standard DCE device. Once installed, it may be left on the terminal
port.
Note: Cable pinouts shown in the MessageView user manual reflect
the terminal’s actual RS-232 port pinout without the RS-232 Port
Adapter installed.
A communication cable
to the male end
is connected
З
З
З
ЗЗ
ЗЗ
З
ЗЗ
Connect the female end
to the MessageView
terminal’s RS-232 port
RS-232 Port Adapter
The RS-232 Port Adapter is included with your terminal.
Replacement Part No. W77128-144-52.
Series A MessageView terminals, 421F, 421N or 421D, have an
RS-232 port accessed from the bottom.
Back View
Bottom View
RS-232 Port
RS-232 Port
Installation Data
Description
Equipment Setup