GE PACSystems™ RX3i IC695CPU310 Central Processing Unit

GE PACSystems™ RX3i  IC695CPU310 Central Processing Unit

The RX3i CPU is programmed and configured by the  programming software to perform real time control of  machines, processes, and material handling systems. The  CPU It communicates with the programmer and HMI  devices via a serial port using SNP Slave protocol. It  communicates with I/O and smart option modules over a  dual backplane bus that provides both:  

■ High-speed, PCI backplane for fast throughput of new  advanced I/O.  

■ Serial backplane for easy migration of existing Series  90-30 I/O

Features

■ Contains 10 Mbytes of battery-backed user memory  and 10 Mbytes of non-volatile flash user memory.  

■ Provides access to bulk memory via reference table  %W. The upper limit of this memory area can be  configured to the maximum available user RAM.  

■ Configurable data and program memory.  

■ Programming in Ladder Diagram, Structured Text,  and C.  

■ Supports auto-located Symbolic Variables that can  use any amount of user memory.  

■ Reference table sizes include 32Kbits for discrete %I  and %Q and up to 32Kwords each for analog %AI  and %AQ.  

■ Supports most Series 90-30 modules and expansion  racks. For a list of supported I/O, Communications,  Motion, and Intelligent modules, see the PACSystems  RX3i Hardware and Installation Manual, GFK-2314.  

■ Supports up to 512 program blocks. Maximum size for  a block is 128KB.  

■ Test Edit mode allows you to easily test modifications  to a running program.  

■ Bit-in-word referencing allows you to specify individual  bits in a WORD reference in retentive memory as  inputs and outputs of Boolean expressions, function  blocks, and calls that accept bit parameters.  

■ Battery-backed calendar clock.  

■ In-system upgradeable firmware.  

Operation, Protection, and Module Status

Operation of this module can be controlled by the threeposition RUN/STOP switch or remotely by an attached  programmer and programming software. Program and  configuration data can be locked through software  passwords. The status of the CPU is indicated by the eight  CPU LEDs on the front of the module. (See “LED Operation”  on page 5)

Battery

A three-cell lithium battery pack (IC698ACC701) is installed  as shown in the figure below. The battery maintains program  and data memory when power is removed and operates the  calendar clock. When replacing the battery, be sure to install  a new battery before disconnecting the old one.

Installation should not be attempted without referring to the  PACSystems RX3i Hardware and Installation Manual, GFK-2314.

1. Make sure that rack power is off.  

2. Install the CPU module in rack 0. The CPU requires two  slots and can use any slots except the highest  numbered (rightmost) slot. Ensure mounting screws are  tightened to completely secure the CPU in the rack.  

3. Turn on power. The module should power up. When the  CPU has successfully completed initialization, the OK  LED stays on and the RUN and EN LEDs are off. The  CPU is now ready to be programmed.  

4. Connect the battery to either of the battery connectors  on the module. (You can connect the battery at any step  in the installation process but it will begin to drain  immediately unless power is applied. To maximize  battery life, install it after power has been turned on).

Programmer Connection

The programmer can communicate with the CPU via the  serial port 1, serial port 2, or the rack-based Ethernet  interface.

If you connect your programmer via an Ethernet TCP/IP  network, you will need a CAT5 standard Ethernet cable with  RJ-45 connectors. Before connecting the programmer and  RX3i to the Ethernet TCP/IP network you must set the IP  address, using the Initial IP Address software tool. After  setting the IP address, connect the RX3i and the computer  running the programming software to the Ethernet Interface.  For detailed information on programmer connection via  Ethernet TCP/IP, refer to the TCP/IP Ethernet  Communications for PACSystems User’s Manual, GFK-2224.

For a description of programming functions, consult  Proficy™ Machine Edition Logic Developer-PLC Getting  Started, GFK-1918 and the software online help.