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6B50-1

Isolated, Field Configurable Digital I/O

Analog Devices 

GENERAL DESCRIPTION

The 6B50-1 and 6B50-2 are 24-channel digital I/O boards

which are compatible with the 6B Series Signal-Conditioning

Modules at the network level. Each converts commands from

the host computer into logic levels suitable for interfacing with

industry-standard opto-isolated digital I/O panels. All I/O

channels can be configured for input or output, using bit or byte

addressing. In addition, the status of the port can be read back

by the host to confirm the I/O configuration

Synchronized Sampling – The synchronized sampling

command allows data to be sampled simultaneously from all

6B11, 6B11HV, 6B12, 6B12HV modules and all 6B50 boards in a

6B Series system. Each module or board stores the data in a

separate register within its microcontroller and can access the

data with a separate command.

Software Configuration – The 6B50-1 and 6B50-2 can be

.

6B50-1 / 6B50-2

software-configured for address, baud rate, data format,

checksum status and I/O configuration. All programmable

parameters are stored in the nonvolatile memory of each digital

I/O board.

An on-board microcontroller communicates with the host

through an RS-232C port (Model 6B50-2 or with a 6B Series

backplane through an RS 485 port (Model 6B50-1) to exchange

command and status information.

An included EEPROM stores system parameters (address, baud

rate, checksum, etc.) as well as I/O configuration information.

The microcontroller is interfaced to 8-bit latches and buffers a

maximum of 24 digital i/o channels. Each channel can be

individually set as either an input or output. The 6B50-1 and

6B50-2 are 3.47-inch x 6.5-inch open boards that can be panel

or rack mounted.

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Figure 2

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