User guide

Hardware
14
890 USE 108 00 August 2001
Special Features of the Compacts
CPU Memory
Choices
The Compact Controllers deliver 984 architectural consistency and performance in
a small, modular package. Compacts are easy to install, require only a small area
for installation, and support the low-cost line of A120 I/O modules. The E984-258/
265/275/285 PLCs feature 386 EX processors for increased performance and
operate using Concept programming panel software. In addition to these features
the E984-275/285 come with a PCMCIA interface for memory backup.
Compact PLCs are available in thirteen CPU models with four different user memory
sizes:
The A984-120 CPU with 1.5K words of user memory, 2K words State RAM, 3.5K
words total and one Modbus communication port, 8Mhz CPU operation.
The A984-130 CPU with 4K words of user memory, 2K words State RAM, 6K
words total and one Modbus communication port, 8Mhz CPU operation.
The A984-131 CPU with 4K words of user memory, 2K words State RAM, 6K
words total and two Modbus communication ports, 8Mhz, CPU operation.
The A984-141 CPU with 8K words of user memory, 2K words State RAM, 10K
words total and two Modbus communication ports, 8Mhz, CPU operation.
The A984-145 CPU with 8K words of user memory, 2K words State RAM, 10K
words total, a Modbus port, and a Modbus Plus network interface, 8Mhz CPU
operation.
The E984-241 CPU with 8K words of user memory, 2K words State RAM, 10K
words total, two Modbus communication ports and FLASH RAM based system
executive, 16Mhz CPU operation.
The E984-245 CPU with 8K words of user memory, 2K words State RAM, 10K
words total, a Modbus port, a Modbus Plus network interface and FLASH RAM
based system executive, 16Mhz CPU operation.
The E984-251 CPU with 16K words of user memory, 2K words State RAM, 18K
words total, and two Modbus communication ports, FLASH RAM based system
executive, 16Mhz CPU operation, and 24K of (6xxxx) extended data register
storage.
The E984-255 CPU with 16K words of user memory, 2K words State RAM, 18K
words total, a Modbus port, a Modbus Plus network interface, FLASH RAM based
system executive, 16Mhz CPU operation, and 24K of (6xxxx) extended data
register storage.
The E984-258 CPU with two Modbus communication ports, 1Meg FLASH RAM
based system executive, 512K SRAM, 16K words of user memory, 32K words
State RAM, 48K words total, 128K words of configurable SDA 6X registers,
25Mhz CPU operation, operating temperature -40 ... +70 degrees C, and the
Run, Ready, Communication 1 & 2 LEDs are yellow.
The E984-265 CPU with two Modbus communication ports and a Modbus Plus
network interface, 1 Meg FLASH RAM based system executive, 512K SRAM, 8K
words of user memory, 16K words State RAM, 24K words total, 128K words of
configurable SDA 6X registers, and 25Mhz CPU operation.