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93
Instruction Functions
Section 2-2
2-2-23 Network Instructions
RECEIVE VIA
SERIAL COMMU-
NICATIONS UNIT
RXDU
@RXDU
255
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
the allocated DM Setup Area.
Output
Required
1014
CHANGE SERIAL
PORT SETUP
STUP
@STUP
237
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.
Output
Required
1022
Instruction
Mnemonic
Code
Symbol/Operand
Function
Location
Execution
condition
Page
NETWORK SEND
SEND
@SEND
090
Output
Required
1045
NETWORK
RECEIVE
RECV
@RECV
098
Output
Required
1051
Instruction
Mnemonic
Code
Symbol/Operand
Function
Location
Execution
condition
Page
RXDU(255)
D
C
N
D
: 1st destination
word
C
: 1st control
word
N
: Number of
bytes to store
0000 to 0256 BCD
STUP(237)
C
S
C
: Control word
(port)
S
: First source
word
SEND(090)
S
D
C
S
: 1st source
word
D
: 1st destination
word
C
: 1st control
word
D
15
0
n
S
15
0
Local node
Destination node
n: No.
of send
words
Transmits data to a node in the network.
RECV(098)
S
D
C
S
: 1st source
word
D
: 1st destination
word
C
: 1st control
word
D
15
0
15
0
S
m
n
Source node
Local node
Requests data to be transmitted from a node in the network and
receives the data.
Содержание SYSMAC CS1D-CPU**
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Страница 193: ...154 3 35 4 MOVE BIT MOVBC 568 1274 3 35 5 BIT COUNTER BCNTC 621 1276 3 35 6 GET VARIABLE ID GETID 286 1278...
Страница 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
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