When we go to the site, the first step is never to hold the
motherboard and dismantle it, but to measure the battery first. Often just change the battery, do a reset, re-infuse the parameters back, and the machine will run. But here is a fatal detail: when changing the Fanuc system battery, it is best to let the system not completely cut off the power, that is, when the machine is on to change. Because completely cut off the power, some original can still rely on not lost data will really never come back. So many experienced masters, change the battery are especially careful.
Replace the battery is not enough? Then you need to give the SRAM "brainwashing”. This is especially common on older systems. Sometimes the data has been completely bad, you are replaced with a new battery, the system is still chaotic when you turn on the check. At this point, it's usually necessary to force the SRAM to be emptied, i.e. initialized. Many systems clear the messy data by holding down the DELETE key when the system is turned on. But different series of techniques are not the same, some machine tool manufacturers have changed their own startup logic, do not try blindly, because this clear down, all the parameters are really clean. So do it before, the head of the string must be taut: parameter backup is still there?
After the brainwashing is still reported, then really should be to the hardware to think about. If the initialization is complete, the battery is also new, 910 is still with you dead, then we must begin to suspect that the hardware does not work. Common: SRAM chip aging, the CPU board does not work, memory board problems, corrosion of the motherboard circuitry, plugs oxidized. Some of the machine symptoms are particularly typical: repaired today, after two days and jump 910, which is generally not the battery pot, but the storage-related piece of hardware began to be unstable. Especially in workshops with high temperatures and high oil mist, the motherboard and chips are especially prone to this problem.
Can a bad Fanuc motherboard be reported as a 910?
Yes, but not as much as the previous ones. Because in some Fanuc systems, the SRAM circuitry is directly on the CPU motherboard. So if the capacitors on the motherboard are old, the memory circuitry is on strike, the circuit boards are damp, or the chips are hung up, you will get a parity error just the same. The performance of this situation is usually: the alarm appears repeatedly, after the initialization is not stable, the parameter is lost again and again. At this point, it's usually time to send the motherboard in for testing.
Instead of waiting for something to go wrong and then crying, why don't you change the battery in advance?
Compared to the damage caused by downtime, a battery is worth nothing. But a lot of factories just don't, have to wait until the parameters are lost before they think about it. The more those who do not shut down the production line for many years, the more likely to make this mistake, all think "the machine is running well, change it for what?” The result is to catch a back to the big power a break, direct 910 break. So a lot of management in place in the factory, will be regularly lined up to change the Fanuc backup battery, especially the old system, the money really can not save.
In fact, a lot of 910 has given you a signal, because the Fanuc system in the battery voltage is low, generally the first out of a "BAT” alarm. But a lot of people do not take it seriously ah, and even against the BAT alarm to do a few months of work. Until the battery completely cut off the gas, SRAM data began to collapse, 910 only hit the face. So, the 910 didn't come out of nowhere, it was the result of a long history of ignoring that little "BAT” warning.
