GE IC697CPM790 processor

User Memory
Program and data memory for the CPM 790 is provided
by a memory board with 1 Mbyte of battery-backed
CMOS RAM. 512 Kbytes of this memory is available for the
user’s application program and data. This memory board is
an integral part of the CPM 790 module and is included
with the module.
Flash Memory
This module uses flash memory for storage of the
operating system firmware (this module does not support storage of user program in the flash memory). This
allows updates of the firmware without disassembling the module or replacing EPROMs. The operating system firmware is updated by connecting a
PC compatible computer to the module’s serial port
and running the Loader software included with the
firmware floppy disk.
Operation, Protection, and Module Status
Operation of this module can be controlled by the
three-position RUN/STOP switch or remotely by an
attached programmer and programming software.
Program and configuration data can be locked
through software passwords or manually by the
memory protect keyswitch. When the key is in the
protected position, program and configuration data can
only be changed by a programmer connected parallel
only (to the Bus Transmitter module). The status of a
CPU is indicated by the four green LEDs on the front
of the module.
Operating Temperature
The CPM 790 requires forced air cooling for proper
operation in ambient temperatures greater than 40
C
(104
F). A fan capable of 70 CFM (including filters)
should be located beneath slot 1 of the rack containing
the CPU.
Fan assemblies (IC697ACC721, IC697ACC724, and
IC697ACC744) can be ordered for direct mounting on
the IC697 rack. Refer to the applicable Programmable
Controller Installation Manual for detailed information.
Installation
It is the responsibility of the OEM, system integrator, or
end user to properly install the PLC equipment for safe
and reliable operation. Product manuals provide
detailed information about installation, startup, and
proper use of the PLC equipment. The installation
manual, shipped with your PLC programming software,
describes how to properly install the equipment. If the
PLC installation must comply with supported standards,
such as FCC or CE Directives, please refer to the
Installation Requirements for Conformance to Standards