10 - 11 10 - 11
MELSEC-Q
10 DEDICATED INSTRUCTIONS
10.3 Z(P).MBREQ
With this instruction, a request message can be sent to the slave in any given PDU
(protocol data unit) format.
Usable Devices
Internal device
(System, user)
Link direct device
J \
Constant
Set Data
Bit Word
File register
Bit Word
Intelligent
function module
device
U \G
Index register
Zn
K, H $
Others
(S1)
(S2)
(D1)
(D2)
ZP.MBREQ
Z.MBREQ
Z.MBREQ
"Un"
(S2)
(D2)
(D1)
(S1)
ZP.MBREQ "Un"
(S2)
(D2)
(D1)
(S1)
[Instruction symbol]
Command
Command
[Execution condition]
*1
*1
*1: 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.
Set data
Set data
Setting
Setting Side
*2
Data Type
”Un”
Head I/O number of module
(00
H
to FE
H
: upper 2 digits of the I/O number in 3-digit notation)
User
(S1)
Head number of device where control data are stored
User, system
(S2)
Request message storing head device
User
(D1)
Response message storing head device
System
BIN 16 bits
(D2)
Device turned ON one scan on completion of the instruction
(D2)+1 also turns ON for error completion.
System Bit
*2: 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.
The local device and program-based file register are not available as the devices used
for set data.
REMARK
Refer to Section 4.2 for details of the PDU (protocol data unit).
