Hardware reference guide
I/O Modules
35013379 02 October 2007 717
Modsoft Module 
Zoom Selection 
(Inputs)
Push <Enter> to display and select the Dual Mode and Filter Select options. 
I/O Map Register 
(Outputs)
The following figure shows the 4x output register. 
In Fast Trip Mode, each output can be turned ON by the Command Bit (e.g., Output 
1) or by the corresponding Input Bit plus the Fast Trip Enable Bit (e.g., last order 
Input 1 controls Output 1 directly).
Dual Mode:
Filter Select:
When Dual Mode Is Enabled
1. Output 1 is turned ON when Input 1 and 
Input 2 are ON and when both “Fast Trip 1
Enable” and “Fast Trip 2 Enable” 
are enabled; or by directly turning ON the 
Output 1 bit.
2. Output 2 is controlled by the Output 2 bit.
3. Output 3 is turned On when Input 3 and 
4. Output 4 is controlled by the Output 4 bit.
Input 4 are ON and when both “Fast Trip 3 
Enable” and “Fast Trip 4 Enable”
are enabled; or by directly turning ON the 
Output 1 bit.
Filter Select
This entry selects which filter response time to 
use for the input circuits.
.5 msec
1.5 msec
Disabled
Enabled
Fast Trip 1 Enable
Output 1 
23456781
Output 2 
Output 3 
Output 4 
Fast Trip 2 Enable
Fast Trip 3 Enable
Fast Trip 4 Enable
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com










