[memoryman]

HM6264 (or equivalent) have to be the low power version (LP or ALP) version.
Don't forget the parity chips as well. If you can buy a set, just replace them.
You must have the boards in place, as fordav11 said. There are sram soldered chips on the boards.

[Andy Fritz]

Hi there Andy, Ia am geting the same problem with my Miyano cnc Lathe BNC-34, Control Fanuc 10TE, do you have a parameter list as to correct this?

Sorry for late reply! Yes I have full parameters, but I dont think they would work for your machine. Perhaps a start though. Just send me a pm with your email.

Andy

[Andy Fritz]

HM6264 (or equivalent) have to be the low power version (LP or ALP) version.
Don't forget the parity chips as well. If you can buy a set, just replace them.
You must have the boards in place, as fordav11 said. There are sram soldered chips on the boards.

That is interesting for sure. I stil have the same problem after replacing all the HM6264 chips on both main board and the Add Memory board. I replaced all LP chips with LP and the P chips with P chips. If you say that ALL SRAM chips on both board should be LP then perhaps that is the problem. Where are the soldered SRAMS?

Andy

[Andy Fritz]

Looking at my A16B-1210-0381 /01A Add Memory board there are only 2 HM6264 P chips but space for 4 chips. I have also seen many of these boards with 4 SRAM chips. Would it be ok to just install two more chips or would I also need to change something else, perhaps jumper settings or parameters?

Andy

[memoryman]

afaik, there is no advantage to doing so, as the ADD.MEM BOARD is not used for param, programs etc.

[Andy Fritz]

Oh really? Where is memory for parts program added then and what is the ADD Memory board used for?

Andy

[memoryman]

the main memory is on the motherboard; the use of the ADD Memory board is unclear to me.

[fordav11]

the add mem board has to be for additional program storage capacity. that is the only reason to add more memory... to get more programs stored.

as stated above there are some 6167 RAMs, also in sockets. you could replace those too (they are cheap)
or, the pics you sent me are long gone ~2 years ago, send me those board pics again and I'll take a closer look for RAM types.

just a thought, you could temporarily disable all of the RAM except the bare minimum (20 meters) and remove the add RAM board entirely (both via the option parameters) and see if the problem goes away. if it doesnt then chances are there is some other RAM causing that issue.
its easy to find and replace if you send me pics of the board(s)

[memoryman]

On the a16b-1010-0040 motherboard, the diagram show the 6264 chips in positions A34 & B34 to be connected to VCC, while the other sram chips are connected to VBB!
All of the sram chips on the -0380/1 board are connected to VCC, so they cannot be for part program storage.

[fordav11]

ok fair enough. but for what other reason would the control need more memory?
getting back on topic to the RAM issue.... there is more than just those 6264 RAMs on the board(s) so there has to be other RAMs that are bad/flakey.
I think at this stage since the RAMs have been replaced and it didn't fix the issue the next easiest thing to do is replace the ADD RAM board and see if the problem goes away (or disable it via option parameters)

[memoryman]

It could be the BAC (RAM interface, loc. D36) which generates/checks parity); There are also 2 HM6116 (loc. K6 & K8).
There is no option param for the -0381 board; it is needed for certain options, but I don't know which ones. Worth trying, though.

[Andy Fritz]

Hi guys,

Thanks so much for your help. As of yesterday the situation is a bit different. The control packed up with the usual memory addresses filling the screen but this time the message read "ZERO DIVIDE".
I rebooted and got the IPL screen with "check system lable: Error". After rebooting holding 7 and 9 zapping the memory and inputting all the 9000 series options and rebooting for the first time the control software did not load.
instead I got the memory addresses with the message "L111 EMUL.". Repeating the procedure returned the same result. I first tried to remove and clean legs and sockets of all SRAMs including the small 6167s on both main and add memory boards. Did not help and returned the same message. Then I tried to swap the 6264 chips on both boards and after inputting options I got a screen with memory addresses and the message "RAM PARITY ERROR". Then I rebooted and got the message L111 EMUL. So if there is something on either of the boards destroying ram chips it has now destroyed all chips I have. Perhaps they are all fine, and one of the 6167s are bad or one of the soldered 6264s are bad. Either way I can't change any other parameters apart from the 9000 options in IPL mode, so I can't disable the add memory board. The idea of using the bare minimum sram is good. I know how to change between 40 m or 80 m at the IPL options, but not how to set for 20m. If someone knows and which RAMs I should leave in, please tell me.

[memoryman]

turn ALL the pps option bits OFF in 9120; bit '0' is 40m. That makes the control default to 20m pps.

[Andy Fritz]

turn ALL the pps option bits OFF in 9120; bit '0' is 40m. That makes the control default to 20m pps.

Hi Memoryman,

9120 has always had all bits off. I thought that 9110 was for memory and that bit 3 was for 40m and bit 4 was for 80m. On this control 9110 bit 3 was on when I bought the machine but all the sram slots on the mb was full. Does that sound like 40m is what I have? If i manage to set the options for 20m memory should I pull all srams in sockets from the main board including the 4 small 6167 chips or should I leave a few in? I'd so, which do I pull out?

[fordav11]

9110.4 is 80M. 9120 bits 0, 2, 3 and 4 are for memory too. 9120.0 is 40M. with 9110.4 set to 0 and 9120.0 .2 .3 & .4 bits set to 0 you'll have 20M
9131.7 is add sub memory. that's probably enabling the addmem board.......

did you get an error on the 7-seg LED on the motherboard? or if you have the ACP board A16B-1210-0410 then leds 0, 1 and 2 on/off?
looks like your motherboard is bad.
zero divide means the CPU has crashed. i.e. the main program can't run because the main program RAM is bad or something else in the CPU circuit is bad. the CPU has encountered a divide by zero which is illegal (try it on a calculator and you will see). The error happens when RAM where the main program runs is corrupted or not working or any IC in the CPU circuit has failed. by main program I mean the Fanuc software that gets the machine working, not the CNC G-Code program.
so you either need to replace all of the RAM on the motherboard (including non-socketed RAM) or replace the entire motherboard.
At the very least, find the RAM connected to the CPU and system software ROMs and replace all of it.

if you need help locating that RAM put up some bigger, clearer & complete pics.
I can almost see the CPU top middle (68000) and the ROMs 1220 is your system software.
If I were to guess I'd say those 2 non-socketed 6264 chips are bad (assuming you have replaced the other socketed RAM with known good chips)
Or some other RAM not in that pic is bad.

[Andy Fritz]

Ha! The latest problem with not even getting the software to load was my fault.
For some reason I thought inputting options as dec numbers would work:-)
Weird since I have done this zillion times before.
So now I get the control to load the software and I am back to square one and can at least run the machine while waiting for HM6167LP and HM6167P chips to arrive.

My parameter back up from the previous owner does not have anything above P9111 so not sure what the deal is. If the Ad memory board is recognized by setting P9131.7 to 1 then clearly the machine came to me with incorrect parameters regarding memory since the machine came with the Ad memory board.

Fordav if your email is the same as in 2011 I will send you some high res pictures. The main board is A16B-1010-0400/09D so it has the 7 segment led at the top left and yes I got 3 on it before when the control didnt want to load the system. Now it is fine though.

If you have complete info on all the relevant 9100 plus parameters for the 10TA could you please give me the complete settings for enabeling / disabeling the add memory board?
I just want to rule out that some incorrect parameter settings have caused the problems in the past. I could imagine that if the a parameter setting says that there is memory somewhere where there isnt perhaps the control accepts that and packs up whenever that area of the memory is called upon but is not physically present. That could explain why sometimes it works for 6 months and other times just a few days meaning it works fine as long as not the whole memory is used.

So in a nut shell:
If I want to set the control up for 20m if that is the bare minimum I set all bits at P9110 and P9120 to zero and P9137 bit 7 to zero and remove the add memory board. But which SRAMs from the main board do I pull? Should only the 4 pcs HM6167LP and the 2 pcs soldered HM6264LP be on the board? OR should I also leave the first of the three pairs of socketed HM6264LP?

If I want to set up the control for 40m should I install all SRAMs on the main board or should I also install the Add memory board and set P9137.7 to ON?

Finally for 80M? I think 80 m is the max so would assume fill all SRAM sockets with chips, set 9131.7 to on set 9110.4 to on, or should also 9110.3 be on? Should also 9120 bit 0.1.2.3 and 4 be set to ON as well for 80m?

Perhaps there are different versions of this control where some use P9137 and 9120 and others dont.

Cheers,

Andy

[fordav11]

same email as before.
memory on 10 series can go up to 480M, probably via additional memory boards.
at this stage don't complicate the issue. set the memory to 20M
9131 is 'add sub memory'. I guess it could be added on another board or somewhere else. it could be for anything, like a sub CPU for FAPT or something else, we dont know.
if you are unsure about which RAM to change, swap all of it. it's cheap.

you could also try with no options. i.e. set number of axes to 2 then leave everything else at 0
that will tell you if the addram board is enabled with an option (in that case it will be disabled).

[memoryman]

Fanuc 10 Series A Control (A16B-1010-0040) - max 80 Meters (32k) with add.mem.brd; 60m (24k) without
Fanuc 10 Series B Control (A16B-1010-0190) - max 480 Meters (192k) - with the memory on the ROM/RAM Board A16B-1211-029x)
Fanuc 10 Series AD Control (A16B-1010-032x) - max 640 Meters (256k)

[memoryman]

system software is on flash and is not cleared by clearing sram; it was referring to system data.

[Andy Fritz]

Thanks again for your help!

I was really confused but with some experimentation I found that the 9120 and 9131 parameters are not used on the 10A control.
I know which ram chips to remove / ad and how to configure the 9110 parameter for 20 - 80m and everything works so far.

For the benefit of others:

Fanuc 10(M/T)A with A16B-1010-0400 main board and A16B-1210-0381 Add memory board:
With NO options active in parameter 9100 - 9131, (Enter "00" for all options except P9110 / Opt 11):
The main board has 6 sockets in two rows for SRAM. These should be installed in pairs eg upper and lower starting from left to right.
One pair of HM6264LP SRAMs and Add memory board removed does not work and returns RAM ERROR in IPL mode.
Two pairs of SRAMS, Add memory board removed and P9110 bit 3 and 4 at "0" gives 103 pages of memory or 20m.
Three pairs of SRAMS, Add memory board removed and P9110 bit 3 and 4 at "0" gives 205 pages of memory or 40m.
Three pairs of SRAMS, Add memory board removed and P9110 bit 3 set to "1" and bit 4 at "0" gives 307 pages of memory or 60m.
Three pairs of SRAMS, Add memory board installed and P9110 bit 3 set to "0" and bit 4 at "1" gives 410 pages of memory or 80m.
The add memory board has 4 SRAM sockets for HM6264P chips. For Fanuc 10A controls only two chips are used. If another pair is installed it works but, as Memoryman pointed out, there is no benefit meaning you still only get max 80 m memory.

I set it up for 20 m and tried all my SRAM chips hoping to find a bad one, but they all work.
I have ordered replacement HM6167LP (4 smaller parity chips on main board), HM6167P (2 pcs on Add memory board) and HM6116P (2 pcs on main board) and will replace those and keep my fingers crossed. If the control start playing games again I will replace both the main board and the add memory board.

Hope someone finds this neverending story useful:-)

Cheers,

Andy