MC206X - Flash EPROM or RAM?
MC206X can use the Flash Memory on power up. It depends on the setting of the POWER_UP paraemter. If POWER_UP = 1 then it will copy the programs from Flash to RAM on each power up. If set to 0, then it uses the RAM on power up and does not copy from Flash. If using RAM for power-up then it is subject to battery charge issues and program corruption can occur.
There is a button in Motion Perfect to "Fix" the programs into Flash and set the POWER_UP parameter. Always be sure to set "Fixed" before you disconnect Motion Perfect.
If trying to recover a controller that has lost battery charge and the programs have been lost, it is possible to restore the last set of programs that were in EPROM. In the direct Terminal mode in Motion Perfect 2, type POWER_UP=1 and then type EX to reset the controller. During the re-start it will load the programs from EPROM into RAM and run them if set to do so.
Of course, if the programs saved in EPROM are not correct then you will simply restore whatever was in EPROM. But at least it might be a good start to restoring the machine.
MC_CONFIG vs Flash parameters
All Motion Coordinators store the IP_ADDRESS, IP_NETMASK and IP_GATEWAY in Flash memory. So there is usually no need to add them to the MC_CONFIG. There are some differences with other system parameters. MC4N-ECAT, MC4N-RTX, MC6N-ECAT, Flex-6 Nano ...
AN-401 Recovering project from MC2xx
When programs are not “Fixed” in the Motion Coordinator’s Flash EPROM, there is a chance that the programs may be lost due to low battery voltage or an external event corrupting the RAM. This document will be helpful If the Motion Coordinator will ...
AN-318 MC2xx Battery backed RAM
This document explains about the battery backed RAM of MC2xx series controller The MC224 has a non-rechargeable Lithium Ion battery. The nominal lifetime is 10 years before replacement is necessary. See AN-257 “Replacing MC224 battery”
AN-367 RAM battery issue used in Euro205x, Euro209 & MC206x
The Motion Coordinators Euro205x(P151), Euro209 (P159), & MC206X(P136), contain a Mini Nickel Metal Hydride Button Cell Battery, to maintain the RAM memory contents when the Motion Coordinator is not powered. This document explains the details of the ...
Uniplay Issues After Low Battery Condition - Checks & Corrective Actions
When the original battery in the Uniplay HMI expires at the end of its serviceable life the start sequence of the Uniplay may start to exhibit some issues. The UNIPLAY HMI takes one CR2032 / CR1225 / CR1220 coin lithium battery to keep the RTC ...