KEP MMI-1500 Installation & Operation Manual page 178

Note: HMI Recipe Function
The retentive memory resides in battery backed SRAM. The memory contents are preserved for at least half year after
power off. The battery is recharged whenever the system is powered. The total size of retentive memory is 64K words.
The retentive memory is accessed by an index address. The number of words you specify in LW9000 offsets an index
address from its indicated address. For example if (LW9000)= 50, an RWI Device address of 100 physically accesses data
at address RW 150 (100+50). This dual pointer system allows high flexibility in handing complex recipe tasks. By varying
these addresses many recipes can be stored in retentive memory and downloaded or saved as needed.
For Example:
In this example, the controller has 5 registers that are parameters for machine operation (a recipe). The need to change
these five registers depends on the part or process the machine is running. There are four different setups needed. These 4
setups are stored in the MMI-TS at internal register values RW200, RW210, RW220, and RW230. Download Setup 1 by
writing the value 200 to internal register RWI0000. If you press a Recipe Transfer button that has the Download attribute, the
Recipe at 200 is downloaded. Download Setup 2 by writing the value 210 to internal register RWI0000 and press the Recipe
Transfer button that has the Download attribute (and so on).
Transfer one parameter by putting its position in LW9000. For example, as in the above example with 210 in register
RWI0000, if you set the value in LW9000 to 3 and then press a 1 word Recipe Transfer button, it transfers only one register.
Only parameter 3 is downloaded from Recipe 210.
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