Rockwell Automation 2706-DXX Dataliner Message Display DL5 Series - Manual (Page 61)

2706-UM001A-US-P
Using the Parallel Port 7-11
Using DC Outputs to Trigger the
DL5 There are two types of DC outputs:
•
Hard contact outputs
Hard contact outputs contain mechanically operated contacts. Examples
of hard contact outputs include relays, push buttons, limit switches, and
contact output modules such as Allen-Bradley’s PLC module (Catalog
No. 1771-OW) or SLC module (Catalog No. 1746-OW16). Any contact
that does not have a leakage current while in the OFF state can be
considered a hard contact device.
•
Solid-state DC outputs
Solid-state outputs do not have any mechanically operated contacts. All
switching functions in a solid-state contact are done electronically.
Examples are:
PLC Modules
– Catalog No. 1771-OB or -OBD
SLC Modules
– Catalog No. 1746-OV8, -OV16, -OV32
– Catalog No. 1746-OB8, -OB16, -OB32
– Catalog No. 1746-OG16
The figure below illustrates how DC outputs can be used to trigger the DL5.
Connecting DC Outputs to the DL5 Data Lines
COM
DC Power
Supply
-
+
DL5 Terminals
D0 D1 D2 D3 D15
Controlling
Device
Contacts
TB2-1