Rockwell Automation 193-EC1_2_3_5, 193-ECPM,592-EC1_2_3_5 E3 and E3 Plus Solid-State Overload Relay User Manual - Manual (Page 206)

206 Rockwell Automation Publication 193-UM002I-EN-P - December 2011
Chapter 11 Using DeviceLogix™
DeviceLogix Programming DeviceLogix has many applications and the implementation is typically only
limited to the imagination of the programmer. Keep in mind that the application
of DeviceLogix is only designed to handle simple logic routines.
DeviceLogix is programmed using simple Boolean math operators, such as AND,
OR, NOT, timers, counters, and latches. Decision making is made by combining
these Boolean operations with any of the available I/O. The inputs and outputs
used to interface with the logic can come from the network or from the device
hardware. Hardware I/O is the physical Inputs and Outputs located on the device
such as push buttons and pilot lights that are connected to the E3 Plus Overload
Relay. There are many reasons to use the DeviceLogix functionality, but some of
the most common are listed below:
• Increased system reliability
• Improved diagnostics and reduced troubleshooting
• Operation independent of PLC or Network status
• Continue to run process in the event of network interruptions
• Critical operations can be safely shutdown through local logic
DeviceLogix can be programmed using function blocks or ladder logic through
RS NetWorx for DeviceNet. After a successful download to the E3 Plus overload
relay, DeviceLogix can be enabled using RS NetWorx for DeviceNet or the
DeviceNet configuration terminal (Cat. No. 193-DNCT).
DeviceLogix Programming Example
The following example shows how to program a simple logic routine to control
the E3 Plus Overload Relay’s outputs based on the condition of input signals.
OUT A control is defined by the states of IN1 and IN2 processed through a
Boolean OR gate. OUT B control is defined by the states of IN3 and IN4
processed through a separate Boolean OR gate. This example is using
RS NetWorx for DeviceNet version 8.00.01 and an E3 Plus Series C overload
relay.
IMPORTANT Before programming logic it is important to decide on the
conditions under which the logic run. As defined earlier, the
conditions can be defined by setting parameter 79 (Comm
Override) and parameter 80 (Network Override) to the value
that you want.