Allen-Bradley 1785-MJ EEPROM Memory Module Description and Technical Specifications
The Allen-Bradley 1785-MJ is an EEPROM memory module designed for use with PLC-5 programmable controllers. This module offers 8K words of memory and features user-modifiable read-only memory (ROM) that can be erased and reprogrammed repeatedly using higher-than-normal power supply voltage.
Key Features
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Memory Capacity: 8K words.
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Type: Electrically Erasable Programmable Read-Only Memory (EEPROM).
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User-Modifiable ROM: Can be erased and reprogrammed as needed.
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Versatility: Suitable for various applications due to multiple memory size options.
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Scanner Mode: Can be used to scan or remotely control an input/output link, acting as a supervisory processor for other processors in adapter mode.
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Altitude Operation: Can operate at altitudes up to 2000 meters without derating.
Technical Specifications
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Brand: Allen-Bradley / Rockwell Automation
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Series: PLC 5
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Part Number: 1785-MJ
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Device: Memory module
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Type: EEPROM
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Capacity: 8,000 words
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Compatibility: PLC-5 programmable controllers
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I/O Chassis Universal Remote: Maximum of 32 per I/O Link
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Maximum Analog I/O: 3072
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Backplane Current: 2.5 Amps at 5 Volts DC
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Control Coprocessor Expansion Port: Included
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Operating Temperature: 32 to 140 degrees Fahrenheit (0 to 60 degrees Celsius)
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Storage Temperature: -40 to 185 degrees Fahrenheit (-40 to 85 degrees Celsius)
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Relative Humidity: 5 to 95% (non-condensing)
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Operating Shock: 30 g (3 pulses, 11 milliseconds)
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Nonoperating Shock: 50 g (3 pulses, 11 milliseconds)
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