GE Fanuc IC695CMU310 RX3i Redundancy CPU

IC695CMU310 Introduction

The RX3i Max-ON CPU IC695CMU310 provides Hot-Standby CPU redundancy using two RX3i systems.

The redundant controllers exchange operating data by way of one or two dedicated Ethernet LANs.

Each RX3i system in a Max-On application consists of:

▪ the Max-ON CPU (IC695CMU310)

▪ an RX3i Universal Backplane (IC695CHS0xx)

▪ an RX3i power supply (IC695PSxxxx)

▪ one or more RX3i Ethernet modules (IC695ETM001)

▪ Max-ON application software

▪ Optional Series 90-30 expansion backplanes.

▪ PACSystems RX3i and/or Series 90-30 modules, as appropriate for the application.

The Max-ON CPU is compatible with a wide range of RX3i and Series 90-30 modules, backplanes, and other

equipment, as listed in the PACSystems RX3i Hardware and Installation Manual, GFK-2314.

Max-ON redundancy applications include fuel loading,

standby power generation, boiler systems, and manufacturing systems.

The proprietary Max-ON software provides subroutines for synchronization of variables, program equivalence testing, selection of master CPU, and diagnostics.

When using Max-ON redundancy, transfer of control from the Master to the Backup can take two to three CPU logic scans.

I/O states are maintained during the transfer. Max-ON redundancy is not suitable for SIL 2 or 3 applications.

IC695CMU310 Features

▪ Programming in Ladder Diagram, Structured Text,

Function Block Diagram, and C.

▪ Auto-located Symbolic Variables that can use any

amount of user memory.

▪ 10 Mbytes of battery-backed user memory and 10

Mbytes of non-volatile flash user memory. Use of this

flash memory is optional.

▪ Access to bulk memory via reference table %W.

▪ Reference table sizes include 32Kbits for discrete %I

and %Q and up to 32Kwords each for analog %AI

and %AQ.

▪ Up to 512 program blocks. Maximum size for a block

is 128KB.

▪ Test Edit mode to check changes to a running

program.

▪ Bit-in-word referencing.

▪ Battery-backed calendar clock

▪ In-system upgradeable firmware.

▪ Two serial ports: RS-485 and RS-232.

▪ CPU and module firmware upgrades via Winloader

through CPU’s RS-232 or RS-485 serial port.

Technical Specifications

Module Type: Central Processing Unit

Number of Slots: 1 (single slot)

Backplane Support: Universal Backplane

Protocol Support: Modbus RTU Slave, SNP, Serial I/O

Communication Ports: (2) Isolated RS-232 and RS485

Internal Power: 1.0A @ +5 VDC, 1.25A @ +3.3 VDC

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