Allen Bradley 1794-OE12 /A 1794-0E12 Flex I/O Analog Output 12-Ch

FLEX I/O is a small, modular I/O system for distributed applications that performs all of the functions of rack-based I/O. The FLEX I/O system contains the following components shown below:

Adapter/power supply – powers the internal logic for as many as eight I/O modules

Terminal base – contains a terminal strip to terminate wiring for two- or three-wire devices

I/O module – contains the bus interface and circuitry needed to perform specific functions related to your application

FLEX I/O analog input, output, and combination modules are block transfer modules that interface analog signals with any Allen-Bradley® programmable controllers that have block transfer capability. Block transfer programming moves input from the module’s memory to a designated area in the processor data table, and output data words from a designated area in the processor data table to the module’s memory. Block transfer programming also moves configuration words from the processor data table to module memory.

Factory defaults are the values assigned by the adapter when you:

• first power up the system

• no previous stored settings have been applied.

For analog modules, the defaults reflect the actual number of input words/output words. For example, for the 8 input analog module, you have 9 input words, and 6 output words.

You can change the I/O data size for a module by reducing the number of words mapped into the adapter module, as shown in real-time size.

Real-time size is the setting that provides optimal real-time data to the adapter module.

Analog modules have 15 words assigned to them. This is divided into inputs words and output words. You can reduce the I/O data size to fewer words to increase data transfer over the backplane. For example, an 8 input analog module has 9 words input and 6 words output with factory default. You can reduce the input words to 8 by not using the under range settings set in Word 9. Likewise, you can reduce the write words to 0, thus eliminating the configuration setting and unused words. For information on using DeviceNetManager software, refer to the DeviceNetManager Software help.

FLEX I/O High-Density Analog Modules

1794-IE8, 1794-IE8XT, 1794-OE4, 1794-OE4XT, 1794-IE12, 1794-OE12, 1794-IE4XOE2, 1794-IE4XOE2XT, 1794-IE8XOE4

1794-IE8 Series B and 1794-IE8XT 8 Input Analog Module Image Table Mapping

1794-IE12 12 Input Analog Module Image Table Mapping

1794-OE4 Series B and 1794-OE4XT 4 Output Analog Module Image Table Mapping

1794-OE12 12 Output Analog Module Image Table Mapping

1794-IE4XOE2 Series B and 1794-IE4XOE2XT 4 Input 2 Output Analog Combo Module Image Table Mapping

1794-IE8XOE4 8 Input 4 Output Analog Combo Module Image Table Mapping

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