DDAA1000/SRM User Guide

Point-to-Point Discrete Operation

The following illustrates an example of a point-to-point discrete system. The “Contact Closure Input” may be as simple as a bare wire or be connected to an output of an I/O module. This is an example of turning a lamp at the Master unit by closing a contact at the Remote unit using a discrete output.

Point-to-point discrete operations are bi-directional. An input on the Remote will activate same numbered output on the Master. A contact closure on an input of the Master will close the output on the Remote on the same contact.

Figure 4: Point-to-Point Discrete Operation Example

Dry Contact Closure

8 7 6 5 4 3 2 1 G

8 7 6 5 4 3 2 1 G

Contact Closure Input

Contact Closure Output

DC Supply

+ -

8 7 6 5 4 3 2 1 G

8 7 6 5 4 3 2 1 G

Contact Closure Input

Contact Closure Output

Master

Remote

6

DATA-LINC GROUP

PN 161-09981-002C

rev 8/04

Page 8
Image 8
Omron DDAA1000/SRM manual Point-to-Point Discrete Operation, Master Remote