GE VMIVME-3122 High-Performance 16-bit Analog-to-Digital Converter

Introduction 

The VMIVME-3113A 64-Channel Scanning, 12-bit Analog-to-Digital Converter (ADC) is one of the highest 

density/lowest cost per channel boards in the industry. 

In addition, it contains many features found only on more expensive products. 

The AUTOSCANNING MODE, which is automatically entered on power up, performs Analog-to-Digital (A/D) conversions 

on all inputs and stores them in a dedicated channel dual-port register. 

This allows the user to operate the board without any programming. 

The user simply reads the data from the dual-port registers which always contain the latest converted data for that particular channel. 

There are five other ADC operating modes which allow greater flexibility in controlling the ADC operation. 

The VMIVME-3113A Board is useful for many applications which require a large number of differential inputs to be converted to digital form. 

Overvoltage protected inputs, input filters, programmable timers and jumper-programmable gain features 

lend the board to such applications as factory automation and instrumentation, process control, 

laboratory instrumentation and general data acquisition systems.

A Built-in-Test (BIT) mode permits verification of the input multiplexer and A/D converter.

The PACSystems RX3i family provides advanced diagnostics and high performance I/O. 

With a modular design and multiple expansion options, RX3i is the perfect I/O solution for your process, hybrid,

and discrete applications.

Modular, High-Speed Performance RX3i is a rack-based system with a wide range of modules covering digital,

analog, and numerous other specialty I/O types. 

These pluggable and hot-swappable modules allow you to customize the right mix of I/O, with a variety of voltage ranges and current capacities supported to meet

all your application needs. Regardless of the I/O mix you choose, RX3i is built on high speed interfaces to provide rapid and consistent data transfer.

Highly Scalable

With the ability to pair I/O, RX3i allows you to scale your system with ease. 

In addition to I/O that you can put on the main rack, you can expand locally or remotely to connect to additional racks of I/O. 

In fact, RX3i can support as few as 8 I/O points and up to 32 thousand I/O points in a single system. 

With 7 to 16 slot backplanes and 1 slot expansion options, you can create the perfect system to fit your needs.

System Configurations

The Mini Converter can be used in a point-to-point configuration as described above, 

or in a multidrop configuration with the host device configured as the master and one or more programmable controllers configured as slaves.

The multidrop configuration requires a straightthrough (1-to-1) cable from the Mini Converter’s RS-422 port to the first slave PLC’s SNP port.

Other slaves will require a daisy chain connection between slaves. 

A maximum of eight devices can be connected in an RS-422 multidrop configuration.

All of the devices must have a common ground. 

If ground isolation is required, you can use the Isolated Repeater/Converter (IC655CCM590) in place of the Mini Converter.

When using the Mini Converter with a modem connection, 

it may be necessary to jumper RTS to CTS (consult the user’s manual for your modem).

Cable Diagrams (Point-To-Point) When connecting the Mini Converter to IBM PC and compatible computers with hardware handshaking,

the following cable connections should be used.