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Isolated, Field Configurable Digital I/O 6B50-1 / 6B50-2
FEATURES
Single-channel isolated signal-conditioning modules. Accepts outputs from Thermocouple, millivolt, volt and current signals. Complete microcomputer-based data acquisition systems. Can be remotely reconfigured for various sensor types and input ranges.
in a given application and carried in inventory. FUNCTIONAL BLOCK DIAGRAM
APPLICATIONS
Process Monitoring & Control Test Stand Automation Machine Monitoring Material Testing Remote Energy Mangement Laboratory Data Acquisition
PRODUCT OVERVIEW
The 6B Series delivers sensor-to-host signal-conditioning for www..com remote applications. Software-configurable for a wide variety of sensor types, including: analog input, analog output, and digital I/O, the 6B Series is intended for remote data acquisition, machine monitoring, remote energy management and process monitoring and control applications. Including transformer-based isolation, ranging, linearization, A/d conversion and RS-232C/RS-485 serial communication for up to 256 channels per serial port, the 6B Series modules and boards are a complete, low-cost interface between computers and analog signals. All 6B Series input/output modules are fully encapsulated and identical in pin-out and size, facilitating their ability to be mixed and matched with all other 6B Series modules on the same backplane. The 6B Series is fully rated over the industrial temperature range of -25oC to +85oC. Each 6B Series module and board is a complete microcontroller-based process monitoring and control system, with all calibration, address and linearizing parameters stored in non-volatile memory. Being microcontroller-based, 6b Series modules can be configured for various sensor types, including RTD and thermocouple, and a wide variety of input ranges. This reduces the number of different modules that need to be used
Figure 1. 6B50-1 & 6B50-2 Functional Block Diagram
Designed for industrial applications, the 6B Series modules incorporate transformer-based isolation with surface-mount manufacturing technology - providing increased reliability at low cost. The compact, rugged 6B Series analog modules can be mixed and matched on a 16-channel backplane for high density, remote process monitoring and control. Communications between backplanes, modules and host is in ASCII over an RS-232C link or RS-485 bi-directional serial bus. Circuitry to convert RS-232C to RS485 is built into the 6B backplane. Baud rates are software programmable, with speeds up to 19.2 K Baud. The 6B Series digital subsystem communication is compatible with the overall 6B Series communication protocol. Each digital I/O board can be configured for its address, baud rate and checksum status. Connection to the 16 and 24-channel solid state relay backplanes is by a 50-conductor ribbon cable. This enables interfacing with input and outputs from 4 V to 240 V. Power control modules are also available that can switch up to 3A and come with a variety of ratings for low voltage DC up to 280 VAC.
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Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.326.8703 (c) 2004 Analog Devices, Inc. All rights reserved.
6B50-1 / 6B50-2 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 . 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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6B50-1 / 6B50-2
6B50-1 AND 6B50-2 Models Available
Model 6B50-1 6B50-2 Host PC Communications N/A RS-232C Expansion & Module Communications RS-485 RS-485 Digital I/O (Software Configurable) 24 Channels 24 Channels
6B50-1 and 6B50-2 Specifications (typical @ +23C 5C and Vs = +24 V dc)
Description Digital I/O Number of I/O Channels I/O Circuit Configuration Digital Inputs High-Level Input Low Level Output Digital Outputs High Level Output Current Low Level Output Current High-Level Output Voltage Connector 50 A @ +5 V 100 mA @ +1.1 V +5.25 V maximum Male, 50-Pin Communications Model 6B50-2 Protocol Baud Rates, Software Selectable Distance From Host PC and 6B50-2 Connector LED Indicators Synchronized Sampling Command Conversion Time Model 6B50-1 Protocol Baud Rates, Software Selectable Distance From 6B Backplane and 6B50-1 Connector LED Indicators Synchronized Sampling Command Conversion Time RS-485 300K, 600K, 1.2K, 2.4K, 4.8K, 9.6K, 19.2K 4000 feet maximum 6 Screw Terminals Data and Enable Yes 1 ms maximum Rev. 0 | Page 3 of 8 RS-232C 300K, 600K, 1.2K, 2.4K, 4.8K, 9.6K,19.2K 50 feet maximum Male, DB-25 Data and Enable Yes 1 ms maximum +3.5 V minimum; +5.25 V maximum 0.8 V maximum 24 (Software Configurable for Input or Output) Open Collector Outputs with 47 k Pullups to +5 V Model 6B50-1 and 6B50-2
6B50-1 / 6B50-2
Power Supply Voltage, Operating Voltage, maximum safe limit Current Fuse Mechanical Dimensions +5 V dc 5% +6.5 V dc +70 mA1 1.5 amp Slow-blow, LittelfuseTM Type 251.01.5 3.47" x 6.5" (90.68 mm x 165.1 mm) Environmental Temperature Range Rated Performance Operating Storage Relative Humidity
1 Excluding load current. Specifications subject to change without notice.
0C to +70C 0C to +70C -40C to +85C 0 to 95% @ +60C, non-condensing
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6B50-1 / 6B50-2 PIN CONFIGURATIONS AND FUNCTIONAL DESCRIPTIONS
Figure 3 . Model 6B50 Series Connector, with pin-out assignment.
Figure 4 6B50-1 & 6B50-2 Input Field Connections
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
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6B50-1 / 6B50-2 OUTLINE DIMENSIONS
Figure 5. Outline Dimensions
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6B50-1 / 6B50-2 NOTES
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6B50-1 / 6B50-2 NOTES
(c) 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective companies. D05167-0-9/04(0)
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