Table of Contents
10
DEDICATED INSTRUCTIONS
10.2 Z(P).MBRW
With this instruction, the MODBUS device data are read from and written to the slave.
Internal device
Set Data
(System, user)
Bit
Word
(S1)
(D1)
(S2)
(D2)
[Instruction symbol]
Z.MBRW
ZP.MBRW
*1:
Set data
Set data
Head I/O number of module
"Un"
(00
to FE
H
(S1)
Head number of device where control data are stored
*3
(D1)
Read data storing device
*3
(S2)
Write data storing device
Device turned ON one scan on completion of the instruction
(D2)
(D2)+1 also turns ON for error completion.
*2:
*3:
The local device and program-based file register are not available as the devices used
for set data.
10 - 2
Usable Devices
Link direct device
J \
File register
Bit
Word
[Execution condition]
Command
Command
If the originating station is a Basic model QCPU (function version B or later), or
Universal model QCPU, "" (double quotation) of the first argument can be
omitted.
Setting
: Upper 2 digits of the I/O number in 3-digit notation)
H
The setting side is as described below.
• User
: Data are set by the user before dedicated instruction execution.
• System : The programmable controller CPU stores the result of dedicated
instruction execution.
Specify a dummy device if "00
specification of the target MODBUS device ((S1)+8).
Intelligent
function module
Index register
device
Zn
U \G
Z.MBRW
"Un"
(S1)
(D1)
*1
"Un"
(S1)
(D1)
ZP.MBRW
*1
Setting Side
User, system
: No specification" is selected in the Type
H
MELSEC-Q
Constant
Others
K, H
$
(S2)
(D2)
(S2)
(D2)
*2
Data Type
User
BIN 16 bits
System
User
System
Bit
10 - 2
10
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