Description of 1747-M1

The Allen-Bradley 1747-M1 is an SLC 500 EEPROM module. It has an 8 KB, 1K user words memory for fixed SLC, SLC 5/01, and SLC 5/02 programmable controllers. It also has a user memory of 64,000 words and comes with a flash backup memory. The program scan time of this module is 0.9 ms, while its I/O scan time is 0.225 ms. The module’s backplane current is 1 A at 5V DC and 175 mA at 24V DC. EtherNet and RS-232 ports are also available with the 1747-M1 module. Remember to always turn off the power of the controller before removing or installing the 1747-M1 module, as not doing so may lead to undesired processor faults or damage to the module itself. You should only hold the module by the edges of its plastic housing or ends of the carrier to avoid possible corrosion through the contact of oil or skin. Make sure to avoid exposing it to electrostatic charge because this may alter or even destroy the memory.

The 1747-M1 by Allen Bradley is a Memory Device, specifically used to store both programs and data tables and to provide the user with easy access to them. For fixed the SLC, the SLC 5/01, and the SLC 5/02 programmable controllers, the 1747-M1 unit provides EEPROM 8 kilobyte 1,000 instruction word user memory. The module itself has a total memory of 64000 words; since its primary function is as a memory device, it does have a flash backup memory in case its memory faults.

The entire module’s programs can be scanned in about 0.9 milliseconds, while the I/O themselves take only 0.0225 milliseconds to scan. In total this unit has 3 I/O chassis with 30 module slots. Its backplane current is 1 Amp at 5 Volts DC and 175 milliamps at 24 Volts DC, and it has a communication system consisting of Ethernet and RS-232 ports.

For safety reasons, this module’s power supply must be completely shut off prior to the installation of this unit, to avoid damage to the unit and faults in the processor. Additionally, this terminal should be held only at the very edges of the plastic housing to bring it into the least possible contact with skin and oils. This unit should not be exposed to electrostatic charges, as these may do irreversible damage to this processor’s memory.

Rockwell Disclaimer: The product is used surplus. PDF Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because PDF Supply is not an authorized distributor of this product, the Original Manufacturer’s warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, PDF Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. PDF Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. PDF Supply also makes no representations as to your right to install any such firmware on the product. PDF Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Product details of 1747-M1