Omron CJ - INSTRUCTIONS Reference Manual page 143

Instruction Symbol/Operand
Mnemonic
Code
TRANSMIT VIA
TXDU(256)
SERIAL COMMU-
NICATIONS UNIT
S
TXDU
@TXDU
C
256
N
S: 1st source word
C: 1st control
word
N: Number of
bytes
0000 to 0256 BCD
RECEIVE VIA
RXDU(255)
SERIAL COMMU-
NICATIONS UNIT
RXDU
@RXDU
255
D: 1st destination
word
C: 1st control
word
N: Number of
bytes to store
0000 to 0256 BCD
DIRECT TRANS-
DTXDU(262)
MIT VIA SERIAL
COMMUNICA-
TIONS UNIT
DTXDU
@DTXDU
262
This instruction is
S: 1st source word
supported only by
C: 1st control
CJ2M CPU Units
word
and CJ2H CPU
N: Number of
Units.
bytes to store
0000 to 0256 BCD
DIRECT
DRXDU(261)
RECEIVE VIA
SERIAL COMMU-
NICATIONS UNIT
DRXDU
@DRXDU
261
This instruction is
D: 1st destination
supported only by
word
CJ2M CPU Units
and CJ2H CPU C: 1st control
Units. word
N: Number of
bytes to store
0000 to 0256 BCD
CHANGE SERIAL
STUP(237)
PORT SETUP
STUP
C
@STUP
237
C: Control word
(port)
S: First source
word
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Outputs the specified number of bytes of data from the serial port of a
Serial Communications Unit (version 1.2 or later). The data is output in
no-protocol mode with the start code and end code (if any) specified in
the allocated DM Setup Area.
Reads the specified number of bytes of data from the serial port of a
Serial Communications Unit (version 1.2 or later). The data is read in
no-protocol mode with the start code and end code (if any) specified in
D
the allocated DM Setup Area.
C
N
Outputs the specified number of bytes of data from the serial port of a
CJ1W-SCU22/SCU32/SCU42 Serial Communications Unit. The data is
output in no-protocol mode from the specified first word with the start
S
code and end code (if any) specified in the allocated DM Setup Area.
This instruction sends the data to the Serial Communications Unit as
C
soon as the instruction is executed to achieve high-speed data trans-
mission.
N
Reads the specified number of bytes of data from the serial port of a
CJ1W-SCU22/SCU32/SCU42 Serial Communications Unit to CPU
Unit memory starting at the specified first word. The data is read in no-
D
protocol mode with the start code and end code (if any) specified in the
allocated DM Setup Area.
C
This instruction reads the data from the Serial Communications Unit as
soon as the instruction is executed to achieve high-speed data recep-
N
tion.
Changes the communications parameters of a serial port on the CPU
Unit, Serial Communications Unit (CPU Bus Unit), or Serial Communi-
cations Board. STUP(237) thus enables the protocol mode to be
changed during PLC operation.
S
2. Summary of Instructions
Function Location Page
Execution
condition
Output 869
Required
2
Output 875
Required
Output 882
Required
Output 887
Required
Output 895
Required
105