Connecting A Dl20 To Allen-Bradley 1771-Db Basic Module; Connecting Dl20S To Allen-Bradley 1771-Db Basic Module - Allen-Bradley A-B QUALITY DL20 Series User Manual

Connecting 1771-DB BASIC Module to a Single DL20
Figure 9.11 shows how to connect an Allen-Bradley BASIC Module
(Catalog No. 1771-DB) to a single DL20.
Figure 9.11

Connecting a DL20 to Allen-Bradley 1771-DB Basic Module

1771-DB RS-422
Peripheral Port
Chassis/Shield 1
RS-422 TXD 14
RS-422 TXD' 25
4
5
6
20
Connecting 1771-DB BASIC Module to Multiple DL20s
Figure 9.12 shows how to connect an Allen-Bradley BASIC Module
(Catalog No. 1771-DB) to multiple DL20s.
Figure 9.12

Connecting DL20s to Allen-Bradley 1771-DB Basic Module

1771-DB RS-422
Peripheral Port
4
5
6
20
14
RS-422 TXD
25
RS-422 TXD'
1
Chassis/Shield
Chapter 9
Installation and Maintenance
Note: Other host controllers may use
different pin numbers than shown for
the 1771-DB.
The RS-422 Port of the DL20 Display must be set for
"Input" in the "Set-Up I/O Ports" Menu when connected to
a host as shown above.
Note: Other host controllers may use
different pin numbers than shown for
the 1771-DB.
DL20 Display
RS 422 (+)
5
RS 422 (-)
4
DL20 Display
RS-422 Port
5 RS 422 (+)
4 RS 422 (-)
8 GND
DL20 Display
RS 422 (+)
5
RS 422 (-)
4
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