Hardware reference guide

CPU Modules
35013379 02 October 2007 151
Specifications The following table shows the specifications for the 140CPU42402 CONTROLLER
module.
Specifications
User Logic/Reference
Capacity
984 Ladder
Logic
Discrete Register Extended
Register
64 k words 64 k 57 k 96 k
57,766 4XX registers max
Only if:
0XXX = 16 and
1XXX = 16 and
3XXX = 16
Reference Capacity
Discrete 64 k - any mix
Local I/O (Main Backplane)
Maximum I/O Words 64 In and 64 Out*
Maximum Number of I/O
Racks
2 (Requires expander)
Remote I/O
Maximum I/O Words per Drop 64 In and 64 Out*
Maximum Number of Remote
Drops
31
Distributed I/O
Maximum Number of
Networks per System
3**
Maximum Words per Network
(For every DIO drop, there is a
minimum of words input of
overhead.)
500 In and 500 Out
Maximum Words per Node 30 In and 32 Out
Watchdog Timer 250 ms (S/W adjustable)
Logic Solve Time 0.1 ms / k to 0.5 ms / k
Battery 3 V Lithium
Service Life 1200 mAh
Shelf Life 10 years with 0.5% loss of capacity per year
Battery Load Current @ Power-off
Typical 7 μA
Maximum 210 μA
Communication
This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com