7ME020.9 B & R Automation
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The B & R Automation 7ME020.9 is an expansion module that belongs to the System 2003 Controllers series. It provides a single PCMCIA slot compatible with JEIDA V4.0 and PCMCIA 2.0 standards, supporting SRAM and FlashPROM cards up to 4 MB. The module has a width of 37 mm and a power consumption of 0.7 watts.
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Product Description:
B & R Automation’s System 2003 Controllers series accommodates diverse expansion options, and the 7ME020.9 module is one of them. Classified as an expansion module, it plugs into the controller rack to add removable memory capability for program storage and data logging in industrial automation tasks. By exposing a PCMCIA interface to the CPU backplane, it allows application engineers to introduce or swap non-volatile cards without dismantling the base unit, keeping commissioning and maintenance time low.
In the rack arrangement, the module occupies the Leftmost System Bus Slot, a fixed position that simplifies wiring diagrams because address lines are hard-coded for that location. Its front connector presents a PCMCIA port so only cards that follow that electromechanical format can be inserted. The slot is governed by the JEIDA V4.0 / PCMCIA 2.0 guideline, ensuring that 5 V or 3.3 V memory cards negotiate correctly with the controller. The largest FlashPROM card the carrier will accept is 4 MB; that ceiling defines the maximum application image or recipe set that can reside on removable storage. Electrical overhead stays low—normal operation draws just 0.7 W, which places minimal load on the system 5 V rail and avoids thermal hotspots inside compact panels.
Mechanical clearances are also addressed. The module bezel grants only 3 mm of space for card thickness, preventing the use of oversized enclosures that could stress the eject mechanism. Overall width of 37 mm means the unit claims a single slot on the DIN rail, leaving adjacent bays free for additional I/O or communication modules. It supports both SRAM, FlashPROM technologies, so developers can decide between battery-backed or solid-state retention according to cycle time and rewrite endurance. One interface slot is routed directly to the controller’s address bus, and the design is explicitly matched to the CP476 processor, allowing fast memory-mapped access without wait states.
Frequently Asked Questions about 7ME020.9:
Q: Where must the 7ME020.9 module be positioned in the system bus?
A: The 7ME020.9 module is installed in the leftmost system bus slot of the System 2003 Controllers.
Q: What type and standard of memory card does the 7ME020.9 support?
A: This module provides a single slot for JEIDA V4.0 / PCMCIA 2.0 standard cards.
Q: Which CPU is compatible with the 7ME020.9 expansion module?
A: The 7ME020.9 is compatible with the CP476 CPU from the System 2003 Controllers series.
Q: What kinds of memory cards can be used with the 7ME020.9 module?
A: It supports both SRAM and FlashPROM card types within the PCMCIA interface.
Q: What are the physical and storage limitations for cards used in the 7ME020.9 module?
A: The maximum card thickness supported by this module is 3 mm, and the FlashPROM card size can be up to 4 MB.
