66
5 MODULE DEDICATED INSTRUCTION
5.3 Serial Communication Instruction
BUFRCVS instruction
Z_BUFRCVS
The following instruction can go in the dotted squares.
Z_BUFRCVS
■
Executing condition
■
Argument
*1 Local devices and file registers per program cannot be used as setting data.
Processing details
This instruction receives data with an interrupt program during communication using the nonprocedural protocol or
bidirectional protocol.
Setting data
Instruction
Executing condition
Z_BUFRCVS
Input/output
argument
Name
Description
Data type
Input argument
EN
Executing condition
Bit
Un*
Start I/O number of the module
(00 to FE: Higher two digits when expressing the I/
O number in three digits)
String
s
Reception channel number
1: Channel 1 (CH1 side)
2: Channel 2 (CH2 side)
ANY16
Output argument
ENO
Execution result
Bit
d
Start number of the device that stores read data
* Receive data are read from the receive area of
buffer memory.
ANY16
Setting
data
Internal device
R, ZR
J
\
U
\G
Zn
Constant
K, H
Others
Bit
Word
Bit
Word
(s)
(d)
Device
Item
Setting data
Setting range
Setting side
(d)+0
Receive data length
The number of data read from the number of receive data
storage area is stored.
0 or more
System
(d)+1
(d)+n
Receive data
Data read from the receive data storage area are stored in
ascending address order.
System
Serial
Modem
Structured ladder/FBD
ST
Z_BUFRCVS
EN
ENO
d
Un*
s
Z_BUFRCVS
(EN, Un*, s, d);
ENO:=
Содержание MELSEC System Q
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