User guide

System Specifications
890 USE 108 00 August 2001 161
The following table is table 2 of the technical specifications.
State RAM A984 & E984-24x/251/2 55 2k
E984-258/275 32k
E984-265 16k
E984-285 64k
Word size 16 bit
Technology CMOS with lithium battery backup
Battery 100 days minimum backup retention period
5 year replacement period to assure backup capacity
I/O
Capabilities
I/O type supported A120 Series
Local I/O support One, I/O Mapped as drop #1
I/O racks/drop Four (maximum) one primary rack and up to three secondary
expansion racks
I/O modules/drop 18 (maximum) three in the primary rack and five in each expansion rack
Power for I/O racks From the Controller power supply
NOTE: Logic side only. User must provide field side power if needed.
Remote I/O support None
I/O
Capacity
(Maximum)
A984-1xx&E984-24x/251/255 256 maximum Discrete I/O points, any mix (0x, 1x)
64 words Register I/O (32 in/32 out) (3x, 4x)
E984-258&
E984-265
128 In/128 Out words
Total I/O capacity 256 words
E984-275 256 In/256 Out words
Total I/O capacity 512 words
E984-285 512 In/512 Out words
Total I/O capacity 1024 words
PLC Power A984 & E984-24x/251/255 24 Vdc -15% +20% maximum steady state input current 1 A @ 24 Vdc
E984-258/285 24 Vdc -30% +25% maximum steady state input current 1.0A @24 Vdc
E984-265/275 24 Vdc -20% +25% maximum steady state input current 1.1A @24 Vdc
I/O Bus
Power
A984 & E984-24x/251/255 5 Vdc @ 2.5 A
E984-265/275 5 Vdc @ 3.0 A
E984-258/285 5 Vdc @ 2.5 A
PCMCIA
(E984-275/
285)
Current Rating 110 ma @ 5V for -40 ... +855C for AS-FLSH-004C
Compliance Standard PCMCIA standard 2.1, type II socket type supported