Product Manual Excerpt
Features Single slot CPU with three serial ports Provides 1 Mbyte of battery-backed memory in the same slot Contains 256K of non-volatile user flash memory Supports BMA in release 7.92 and later Supports floating point calculations 12K inputs and outputs (any mix), and up to 8K analog I/O 0.4 microseconds per boolean function 96 MHz, 80486DX4 microprocessor Supports IC66 (can be IC660 or IC661) and IC697 I/O Programmed by MS-DOS software products, or Windows based software products running on Windows 95 or Windows NT over Ethernet TCP/IP or through an SNP port Configurable data and program memory Battery-backed calendar clock Three position operation mode switch Password controlled access Remote programmer keyswitch memory protection Seven status LEDs Software configuration (No DIP switches or jumpers) Reference information inside front door In-system upgradable firmware Functions The CPX 935 is a single slot PLC CPU that is programmed and configured by MS-DOS or Windows based programming software to perform real time control of machines, processes, and material handling systems. It communicates with I/O and smart option modules over a rack mounted backplane using the VME C.1 Standard format. Supported option modules include LAN Interface modules, Programmable Coprocessor, Alphanumeric Display Coprocessor, Bus Controller for IC660/661 I/O products, Communications modules, I/O Link Interface, and all of the IC697 family of discrete and analog I/O modules. MODULE IC697CPX935 LABEL 44A726758 154R01 SERIAL PORT 3 USE THIS MODULE IN SLOT 1 ONLY CPX 935 OFF ON TOP REMOTE PROGRAMMER OK RUN EN ON = OK, ENABLED, PROTECTED FRONT RUN WITH OUTPUTS ENABLED RUN WITH OUTPUTS DISABLED STOP KEY POSITION MODULE FUNCTION BATTERY CONNECTORS INSTALL NEW BATTERY BEFORE UNPLUGGING OLD BATTERY. USE IC697ACC701 MEMORY PROTECT RS-485 COMPATIBLE 96 MHz 32 BIT CENTRAL PROCESSING UNIT P1 P2 P3 SERIAL PORT 2 RS-485 COMPATIBLE FACTORY TEST SERIAL PORT 1 IC66* I/O BUS (7500 FEET (2285 METERS) MAXIMUM) PS I/O TERMINATOR (LAST RACK) TOTAL LENGTH OF ALL INTERCONNECTING CABLES FROM BTM TO LAST BRM IS 50 FEET (15 METERS) MAXIMUM. ALL RACKS MUST BE AT SAME GROUND POTENTIAL (8 RACKS MAXIMUM). NOTE LEGEND CPU - SELECTED CPU MODEL BRM - BUS RECEIVER MODULE, BEM711 BTM - BUS TRANSMITTER MODULE, BEM713 GBC/NBC - BUS CONTROLLER, BEM731/734 PCM - PROGRAMMABLE COPROCESSOR MODULE, PCM711 PS - POWER SUPPLY, PWR710/711/724/748 PARALLEL or NBC or NB C Figure 1. PLC System Configuration Example User RAM Memory The CPX935 has a built-in memory board with 1 Mbyte of battery-backed Fast CMOS RAM memory for user data (program, configuration, and register data) storage. User Flash Memory The CPX935 has 256K of built-in, non-volatile flash memory for user data (program, configuration, and register data) storage. Use of this flash memory is optional. Firmware Storage in Flash Memory This CPU uses non-volatile flash memory for storing the operating system firmware. This allows firmware to be updated 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 software included with the firmware upgrade kit. 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 seven green LEDs on the front of the module. Operating Temperature The CPX 935 requires forced air cooling for proper operation in ambient temperatures greater than 50 C (122 F). A fan capable of 70 CFM (including filters) should be located beneath slot 1 of the rack containing the CPU. Fan assemblies (IC697ACC 721, 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, shipped with the PLC programming software, for additional guidelines. 3 96 MHz, 32-Bit, Floating Point, 1 Mbyte Fast Memory Central Processing Unit GFK-1435E PLC CPUs November 1999 Series 90 -70 Programmable Controller Data Sheet Manual GFK-0600F 22-3 Installation should not be attempted without referring to the applicable Programmable Controller Installation Manual. Connect the battery to either of the battery connectors on the module (see Figure 2). Put the toggle switch in the STOP position. Put the keyswitch in the Memory Protection OFF position. Make sure that rack power is off. Install the CPX 935 module in slot 1 of rack 0 (see Figure 1). Turn on power. The module should power up and the top left (OK) LED should blink. When the diagnostics have completed successfully, the top left LED stays on and the second (RUN) and third (EN) LEDs are off. The fourth (bottom left) LED (MEM PROTECT) is off if the keyswitch is in the OFF position. The CPU is now ready to be programmed (if connected parallel, the CPU can be programmed regardless of key position). After the program has been verified the toggle switch can be moved to the appropriate operation mode position; RUN WITH OUTPUTS ENABLED, RUN WITH OUTPUTS DISABLED, or STOP. The seven LEDs indicate the position of the toggle switch, memory protection status, status of serial port activity, and the state of the program. Programmer Connection, Parallel For a parallel interface (MS-DOS programmer only) the programmer is connected to the top port on the Bus Transmitter Module (IC697BEM713) as shown in Figure 1. Consult the applicable Programming Software User s Manual for a description of programming functions. MEM PROTECT a45727 OPEN REPLACEMENT BATTERY CONNECTOR 1 MBYTE MEMORY BOARD CPX 935 CURRENTLY INSTALLED IC697CPX935 LABEL 44A726758 154R01 SERIAL PORT 3 USE THIS MODULE IN SLOT 1 ONLY CPX 935 OFF ON TOP REMOTE PROGRAMMER OK RUN EN ON = OK, ENABLED, PROTECTED FRONT RUN WITH OUTPUTS ENABLED RUN WITH OUTPUTS DISABLED STOP KEY POSITION MODULE FUNCTION BATTERY CONNECTORS INSTALL NEW BATTERY BEFORE UNPLUGGING OLD BATTERY. USE IC697ACC701 MEMORY PROTECT RS-485 COMPATIBLE 96 MHz 32 BIT CENTRAL P1 P2 P3 SERIAL PORT 2 RS-485 COMPATIBLE FACTORY TEST SERIAL PORT 1 RS-232 STATUS LEDS RUN/STOP SWITCH SERIAL PORT 2 RS-485 SERIAL PORT 1 RS-232 FACTORY TEST ONLY SERIAL PORT 3 RS-485 Figure 2. CPX 935 - Location of Major Features 96 MHz, 32-Bit, Floating Point, 1 Mbyte Fast Memory Central Processing Unit GFK-1435E CPU BTM GBC BRM IC66* BUS (7500 FEET MAXIMUM) RACK 7 ONE METER TOTAL LENGTH OF ALL INTERCONNECTING CABLES FROM BTM TO LAST BRM IS 50 FEET MAXIMUM. ALL RACKS MUST BE AT SAME GROUND POTENTIAL (8 RACKS MAXIMUM). NOTE SERIAL TERMINATOR PLUG (IC697ACC702) PCM FORCED AIR COOLING REQUIRED FOR PROPER OPERATION. REFER TO TEXT. * * RACK FAN ASSEMBLY IC697ACC721/724 AVAILABLE FOR DIRECT MOUNTING ON RACK. NBC OR Figure 3. System Configuration, Serial Connection to Programmer Programmer Connection, Serial Ports The CPX 772 has three independent, on-board serial ports. These ports, accessed by connectors on the front of the module, are used for serial interface to a programming computer or other serial devices. Starting with Firmware Release 8.00, support for program Load/Store operations and Datagrams was added to Ports 1 and 2. Also, Break-Free SNP was added as the default protocol for Ports 1 and 2 in Firmware Release 8.00. For details, see the Important Product Information sheet that ships with the module. Protocols Supported Protocol Port 1 Port 2 Port 3 SNP (Slave) Yes Yes Yes Break-Free SNP (Slave) Yes Yes No SNPX No No No RTU No No No Port 1, the top port, is RS-232 compatible. It has a 6-pin, female, RJ-11 connector, which is similar in appearance (although larger) to modular jacks commonly used for telephones and modems.