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same. Therefore, in the following discussion, Rn refers to both RW and RB devices, and RnI
refers to both RWI and RBI devices.
Rn Device
Refers to a direct Rn address. That is, the value placed in the Address field of an Rn device refers
directly to the Rn address. For example, Rn100 refers directly to the data at address Rn100.
RnI Device
An address with an RnI device is an Indexed address. The address referred to by an RnI device is
actually the specified address plus an indexed offset. The offset is the value in address LW9000.
For example, suppose address LW9000 contains the value 50, and the Address field of an RnI
device is set to 100. This Indexed address actually refers to the data at address Rn150.
Rn De vices Vs RnI De vices
RnI devices
Indexed address devices are most useful when it is necessary to 'page' through a number of
recipes. RnI devices allow a single window to manage all recipe items. Conversely, the use of Rn
devices requires a separate window for each recipe, with each object on each window having a
separate address. This not only uses more of the OIT's resources, but could also lead to
configuration errors as objects are copied, pasted, and edited.
Rn devices
Use when it is desired to show unique information from a recipe. For example, it might be
necessary to show, one window, the names of all of the recipes.
Backup Part
The Backup part is used to copy Recipe, Event, or Historical data to one of the USB memory devices attached to the
OIT. The copy can be triggered by a touch or by a bit transition.
1010-1007W, Rev 06
RB devices use the same memory area as the RW devices. The RB device allows
Bit-level access to recipe data. The bit address is specified by using the RW address,
followed by the bit number 0-F (hex). For example, Bit RB0 is Bit 0 in RW0; Bit
RW2047F is Bit 16 in RW2047.
For an example of how to create recipes, please consult the EZware-5000 online Help
file.
Sil ver Se ries In stal la tion & Op er a tion Man ual
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