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ZRRDB(P)
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7.18 Other instructions
7.18.4 Direct 1-byte read from file register (ZRRDB(P))
7.18.4 Direct 1-byte read from file register (ZRRDB(P))
ZRRDB(P)
Function
(1) Reads the serial byte number designated by n that does not signify a block number, and
stores at the lower 8 bits of the device designated by .
The upper 8 bits designated by will become 00
H.
(2) The correspondence between file register numbers and serial byte numbers is as indicated
below:
n : Serial byte number for the file register to be read (BIN 32 bits)
: Number of the device where the read data will be stored (BIN 16 bits)
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn
Constants
K, H
Other
Bit Word Bit Word
n ––
–– ––
Basic
Process
High
performance
Redundant
Universal
Command
Command
ZRRDB
ZRRDBP
n
n
D
D
ZRRDB
ZRRDBP
D
D
D
D
Area for
block No. 0
Area for
block No. 1
Area for
block No. 2
ZR65536
ZR65535
ZR32768
ZR0
ZR32767
Serial byte number
n
Read-out contents
00
H
B0B7b15 b8
File register
D
ZR0
Serial byte No. 0Serial byte No. 1
Serial byte No. 2Serial byte No. 3
ZR1
Serial byte No. 4
Serial byte No. 5
Serial byte No. 5000Serial byte No. 5001
Serial byte No. 5002Serial byte No. 5003
Serial byte No. 5004Serial byte No. 5005
Serial byte No. 5006
Serial byte No. 5007
ZR2501
ZR2502
ZR2503
Data when an even
number is designated
Data when an odd
number is designated
ZR2
ZR2500
b15 b8b7 b0