584
35 BASIC CONCEPT
35.11 Memory Specifications
35.11 Memory Specifications
This section describes the memory specifications of the SIL2 Process CPU. Information not described in this chapter is same
as that of the standard CPU. ( Page 92 MEMORY CONFIGURATION OF THE CPU MODULE)
Memory configuration
Specifications of the device/label memory differ from the standard CPU in the memory configuration of the SIL2 Process CPU.
Device/label memory
In addition to standard devices and standard labels, the data such as safety devices and safety labels are allocated to each
data area of the device/label memory.
The safety device area, safety label area, safety local device area, and standard/safety shared label area are allocated
between the standard device area and standard label area. The capacities for each area can be changed in the device/label
memory area setting by using the engineering tool. ( Page 665 Device/Label Memory Area Setting)
■Data to be allocated
The following table lists the data allocated to each area.
Safety devices and safety labels cannot be latched, and therefore there is no latch area for safety devices and
safety labels.
Area Application
Standard device area Standard user devices
Safety device/label area Safety device area Safety user devices
Safety label area Safety global labels and safety local labels
Safety local device area Safety local devices
Standard/safety shared label area Standard/safety shared labels
Standard label area Standard label area Standard global labels and standard local labels
Standard latch label area Standard global labels and standard local labels with latch specified
Standard local device area Standard local devices (excluding index register)
File storage area File register files and other data
Standard device area
Safety device area
Safety label areaSafety device/label area
Safety local device area
Standard/safety shared label area
Standard label area
Standard label area
Standard latch label area
Standard local device area
File storage area
To Next Page
Loading...
