6B50-1/6B50-2 Field Configurable Digital I/O
6B50-1/6B50-2 Field Configurable Digital I/O
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 firmwire of the 6B50 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.
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.
Inside the 6B50-1 and 6B50-2
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 1. 6B50-1 Functional Block Diagram |
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| Figure 2. 6B50-2 Functional Block Diagram |
 Model 6B50-1 |
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| Figure 3. 6B50-1 and 6B50-2 Field Connection Diagram - Refer to Outline Section for Pinout Assignments |
| Input/Output | Communications |
| 24-Channels Digital I/O |
RS-232C Interface - Model 6B50-2 RS-485 Interface - Model 6B50-1 |
6B50-1 and 6B50-2 Specifications
(typical @ +23°C ±5°C and Vs = +24 V dc)
1 Excluding load current.
(typical @ +23°C ±5°C and Vs = +24 V dc)
| Description |
Model 6B50-1 and 6B50-2 |
| Digital I/O | |
| Number of I/O Channels |
24 (Software Configurable for Input or Output) |
| I/O Circuit Configuration | Open Collector Outputs with 47 kΩ Pullups to +5 V |
| Digital Inputs | |
| High-Level Input | +3.5 V minimum; +5.25 V maximum |
| Low Level Output | 0.8 V maximum |
| Digital Outputs | |
| High Level Output Current | 50 µA @ +5 V |
| Low Level Output Current | 100 mA @ +1.1 V |
| High-Level Output Voltage | +5.25 V maximum |
| Connector | Male, 50-Pin |
| Communications |
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| Model 6B50-2 |
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| Protocol |
RS-232C |
| Baud Rates, Software Selectable | 300K, 600K, 1.2K, 2.4K, 4.8K, 9.6K,19.2K |
| Distance From Host PC and 6B50-2 | 50 feet maximum |
| Connector |
Male, DB-25 |
| LED Indicators | Data and Enable |
| Synchronized Sampling Command | Yes |
| Conversion Time | 1 ms maximum |
| Model 6B50-1 | |
| Protocol | RS-485 |
| Baud Rates, Software Selectable | 300K, 600K, 1.2K, 2.4K, 4.8K, 9.6K, 19.2K |
| Distance From 6B Backplane and 6B50-1 |
4000 feet maximum |
| Connector |
6 Screw Terminals |
| LED Indicators |
Data and Enable |
| Synchronized Sampling Command | Yes |
| Conversion Time | 1 ms maximum |
| Power Supply | |
| Voltage, Operating |
+5 V dc ±5% |
| Voltage, maximum safe limit |
+6.5 V dc |
| Current |
+70 mA1 |
| Fuse |
1.5 amp Slow-blow, Littelfuse™ Type 251.01.5 |
| Mechanical Dimensions | 3.47" x 6.5" (90.68 mm x 165.1 mm) |
| Environmental | |
| Temperature Range | |
| Rated Performance |
0°C to +70°C |
| Operating |
0°C to +70°C |
| Storage |
-40°C to +85°C |
| Relative Humidity | 0 to 95% @ +60°C noncondensing |
1 Excluding load current.
Specifications subject to change without notice.