Omron CX-PROGRAMMER 5.0-FUNCTION BLOCK OPERATION - Page 107

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Instruction Support and Operand Restrictions Section 2-6
TRANSMIT TXD
@TXD
236 S: 1st source word UINT Yes (not
fixed)
C: Control word UINT ---
N: Number of bytes
0000 to 0100 hex(0
to 256 decimal)
UINT ---
RECEIVE RXD
@RXD
235 D: 1st destination
word
UINT Yes (not
fixed)
C: Control word UINT ---
N: Number of bytes
to store 0000 to
0100 hex(0 to 256
decimal)
UINT ---
TRANSMIT VIA
SERIAL COMMUNI-
CATIONS UNIT
TXDU
@TXDU
256 S: 1st source word UINT Yes (not
fixed)
C: 1st control word UDINT ---
N: Number of send
bytes (4 digits
BCD)
UINT ---
RECEIVE VIA
SERIAL COMMUNI-
CATIONS UNIT
RXDU
@RXDU
255 D: 1st destination
word
UINT Yes (not
fixed)
C: 1st control word UDINT ---
N: Number of stor-
age bytes
UINT ---
CHANGE SERIAL
PORT SETUP
STUP
@STUP
237 C: Control word
(port)
UINT ---
S: 1st source word UINT Yes (not
fixed)
Instruction Mnemonic Function
code
Symbol Operands Supported
variable
data types
AT
setting or
array
variable
required
(Required
word data
size
shown in
parenthe-
ses.)
TXD
S
C
N
RXD
D
C
N
TXDU
S
C
N
RXDU
D
C
N
STUP
C
S