Rxd - Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual

RXD

Instruction
RECEIVE
Symbol
Applicable Program Areas
Function block
Area
definitions
Usage OK
Operands
Operand
D First destination word
C Control word
N Number of bytes to store 0000 to 0100 hex (0 to 256 decimal)
C: Control Word
15 12 11
C
Always 0
Operand Specifications
Word addresses
Area
CIO WR HR
D
C OK OK OK
N
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Mnemonic Variations
RXD @RXD
RXD(235)
Block program areas Step program areas
OK OK
Description
8 7 4 3 0
Byte order
0 Hex: Most significant byte to least significant byte
1 Hex: Lest significant byte to most significant byte
CS and DR signal monitoring
0: No CS and DR signal monitoring
1: CS signal monitoring
2: DR signal monitoring
3: CS and DR signal monitoring.
Serial port specifier
0: CPU Unit's RS-232C port
1: Serial Communications Board port 1
2: Serial Communications Board port 2
AR T C DM EM
OK OK OK OK OK
Function
code
Reads the specified number of bytes of data from
the CPU Unit's built-in RS-232C port or one of the
235 Serial Communications Board's serial ports. (The
Serial Communications Board must be Ver. 1.2 or
later).
RXD
D: First destination word
D
C C: Control word
N
N: Number of bytes to store
0000 to 0100 hex (0 to 256 decimal)
Subroutines
OK
Indirect DM/EM
addresses
Con-
stants
@DM *DM
DR
@EM *EM
--- ---
OK OK
OK OK
3. Instructions
Function
SFC action or
Interrupt tasks
transition programs
OK OK
Data type Size
UINT Variable
UINT 1
UINT 1
Registers
Pulse
TK CF
bits
Indirect
IR
using IR
--- OK --- ---
3
TR
bits
--- ---
841