A customer is purchasing multiple spare 504 CPUs to ensure they have a backup in case of operational issues. Concerned about battery drainage from keeping them on the shelf for an extended period, they are considering installing the 1747-M11 memory chip or keeping the CPUs powered in a spare rack. Are there any effective solutions for this situation?
To ensure seamless operation, it is crucial to update and save the backup on the M11 whenever a program change is made on the working CPU. The M11 is the recommended route for this process, minimizing any potential issues that may arise.
Have you ever wondered about the difference between EPROM and EEPROM? The chip commonly known as EEPROM, or Electrically Erasable Programmable Read-only Memory, has sparked this curious question. Let's delve into the details over the weekend and explore the distinct features separating EPROM from EEPROM.
In the past, EPROMs were cleared using UV light exposure, with specialized eraser units still in use today. The term EEPROM, short for Electrically Erasable Programmable Memory, refers to a type of memory technology. However, the proper use of these terms may vary and cause confusion in different contexts.
Absolutely correct!
There are certain disadvantages associated with using a memory module in your system. Firstly, when the CPU loads from the module, both the program and all data will be overwritten. This can pose a problem if there are unexpected settings that differ from what was initially programmed. To prevent any surprises, it is advisable to monitor S:5/8 "Memory Module Loaded on Boot" using an HMI to set off an alarm and allow for the reset of this bit in case of any issues. Additionally, if you need to make a program edit using a laptop, you must save it to the memory module, requiring you to take the system out of RUN mode. Forgetting about the module's presence can lead to machine behavior issues months down the line. It is essential to stay vigilant and keep track of all changes made to the memory module to avoid any unforeseen complications in the future.
While both of your suggested solutions have their merits, another cost-effective and efficient alternative would be to use an EPROM Programmer. By copying and storing your programs on EPROM chips, you can switch them into a 504 CPU as necessary, reducing prolonged drain on the CPU's internal battery. It's a one-time investment that can offer a robust solution for your need to have multiple backup CPUs on the shelf.
In my experience, keeping spare CPUs powered in a rack for extended periods is not the most energy-efficient solution, and it may even shorten their lifespan. As for the 1747-M11 memory chip, while it does have its uses, it won't exactly solve the issue of battery drainage if the CPUs are not in use. I suggest considering a proper storage solution. An anti-static bag in a temperature-controlled room, for instance, can preserve the life of the CPU. Also, performing regular checks and tests will ensure readiness and the good working condition.
It's great that the customer is thinking ahead with those backup CPUs! Rather than keeping them powered on a spare rack, which might lead to unnecessary wear, consider using the 1747-M11 memory chips, as they can help preserve the CPU's operational state without needing constant power. Additionally, it's a good idea to periodically power them up for checks and updates; just make sure to store them in a climate-controlled environment to minimize any potential deterioration. That way, they can ensure everything stays in good working order without overdoing it!
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Answer: Answer: The battery drainage in SLC500 spare CPUs is typically caused by the internal battery within the CPU depleting over time when not in use.
Answer: Answer: The 1747-M11 memory chip is a backup memory module that helps retain program data and prevent battery drainage in SLC500 CPUs by providing an alternative power source.
Answer: Answer: Keeping spare SLC500 CPUs powered in a spare rack can be an effective solution to prevent battery drainage, as the CPUs will remain powered and active, reducing the risk of battery depletion.
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