After replacing the DS200SDCC we cannot download the program from our Idos to the new eeprom. with the new card, the panel reaches up to A5 only. While trying to download, the message am getting is ".....failed. Unit did not respond". Tried with different card and getting the same result. This is a simplex panel and we are changing the SDCC in the R core. Can anybody help me to resolve this problem.
Thanks

 

HARI,

The likely problem is that the SDCC card doesn't know it's installed in <R> core, and needs to have it's Voter ID set to <R>.

Refer to the Mark V Maintenance Manual, GEH-5980, Sect. 5-3.2.1, 'VERIFY VOTER ID'. The procedure is in this section, using the SLCC display and keypad to set the Voter Id so that the card knows which processor it's supposed to be.

This presumes the PROMs from the old card were moved to the new card and installed properly, or that new PROMs were installed on the new card that were the same as the old PROMs. And that the hardware ("Berg") jumpers on the new card are in the same positions as on the old card.

Please write back to let us know the result.

 

Sorry for the long delay in replying. Am just getting used to this site.

Let me re frame my question. While replacing the EEPROM in the SDCC card with a new one..I cannot download. The unit never goes above A5 with a new eprom. Is there any special steps to replace an eeprom. We are having IDOS and not HMI.

 

I am confused. You've replaced the PROM (or EPROM) or the EEPROM? They are totally different things. PROM is non-volatile while EEPROM is volatile memory.

If you had replaced the PROM, did you use back the same PROM version as before? A5 means the PROM version does not match IO Configurator or the hardware jumper settings.

 

I am replacing EEPROM where we download the program.

> I am confused. You've replaced the PROM (or EPROM) or the EEPROM?
> They are totally different things. PROM is non-volatile while EEPROM is volatile memory.

 

"THE" EEPROM chip is usually the chip in location U9. (By "THE" EEPROM, I'm referring to the chip the EEPROM Downloader downloads to/uploads from.)

Most DCC/SDCC cards come with the EEPROM chip already inserted in location U9. It's almost never necessary to replace the EEPROM

Hari has NOT responded to the question of whether or not he has set the Voter ID of the new card. Before a new DCC/SDCC can be communicated with from an <I> or GE Mark V HMI, it has to be identified, and that is done be setting it's Voter ID from the LCC/SLCC keypad. Otherwise, the card doesn't know which processor it has been installed in (<C> or <R>, in a SIMPLEX panel; <C>, or <R>, or <S>, or <T> in a TMR panel).

When a new DCC/SDCC is installed (or when the U9 chip is replaced), it is blank. It has to be formatted, using the EEPROM Downloader FORMAT command before it can be downloaded to. Downloading ALL will include the FORMAT "partition", but I have found it's better to download FORMAT first, then re-boot the processor, then download ALL.

The caveat here is that before you remove the old DCC/SDCC card you need to upload the TOTD partition information (the Totalizer Data file with the Timers and Counters values). Failure to do this will cause the old data to be lost.

Hari may be referring to the PROM chips which have to be removed from the old DCC/SDCC card and installed on the new DCC/SDCC card. But, those aren't the EEPROM chip that gets downloaded to.

Still, even if he has swapped the PROM chips from the old DCC/SDCC card to the new DCC/SDCC card, and it came with a new EEPROM chip in locaton U9, it still has to have it's Voter ID set to be able to communicate with it and to download anything to it using the EEPROM Downloader.

[Technically, the PROM chips are also EEPROM chips (Electronically Erasable Programmable Read-Only Memory), but they are not "THE" EEPROM chip. And nothing gets downloaded to them; only to the EEPROM chip in location U9, which, in Mark V-speak, is "THE" EEPROM chip.]

 

>> I am confused. You've replaced the PROM (or EPROM) or the EEPROM?
>> They are totally different things. PROM is non-volatile while EEPROM is volatile memory.

EEPROM is Electrically Erasable PROM - it is not volatile! It would be similar to today's memory sticks. It can be erased or overwritten without using a UV source, but it holds its memory in the absence of power.

 

HI

Thank you for your help. The problem is solved. It was with the voters ID. After setting up the voters Id we have to restart the complete unit for downloading to happen.

Thanks a lot.
Hari