Write/Read Device Data To/From Standard Rom - Mitsubishi Q00JCPU User Manual

6
FUNCTIONS

6.30 Write/Read Device Data to/from Standard ROM

Basic
(1) Definition of write/read device data to/from standard
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High
Performance
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Process
(2) Execution method
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Redundant
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(3) Device writable to standard ROM
X, Y, M, L, B, F, V, T, ST, C, D
R, ZR
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High
Basic Process
Performance
The Basic model QCPU, High Performance model QCPU, Process CPU, or Redundant CPU
Note6.91 Note6.91 Note6.91
cannot write/read the device data to/from the standard ROM.
Redundant
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Write/read the device data to/from the standard ROM is to write any device data to the
standard ROM. Writing the fixed value used for operation and operation result to the
standard ROM can prevent data disappearance at the time of low battery. Also, the
data written to the standard ROM can be read by any timing using the instruction.
Device data is written to the standard ROM by the SP.DEVST instruction. Also, the
device data written to the standard ROM is read to the specified device by the
S.DEVLD instruction.
Table6.65 shows the devices writable to the standard ROM.
Table6.65 Device writable to standard ROM and storage area
Device name
*1 *2
, W , SM, SD, SB, SW
* 1: The extended data register (D) is also included.
* 2: The extended link register (W) is also included.
6.30 Write/Read Device Data to/from Standard ROM
Storage area
Standard ROM (Device data storage file)
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