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983
Serial Communications Instructions
Section 3-24
3-24-3 TRANSMIT: TXD(236)
Purpose
Outputs the specified number of bytes of data from the CPU Unit’s built-in RS-
232C port or one of the Serial Communications Board’s serial ports. (The
Serial Communications Board must be Ver. 1.2 or later).
Ladder Symbol
Variations
Applicable Program Areas
Operands
The contents of the control word, C, is as shown below.
Operand Specifications
TXD(236)
S
C
N
S
: First source word
C
:
Control word
N
: Number of bytes
0000 to 0100 hex (0 to 256)
Variations
Executed Each Cycle for ON Condition
TXD(236)
Executed Once for Upward Differentiation
@TXD(236)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Not supported.
Block program
areas
Step program
areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
15
8
0
11
3
7
4
12
C
Serial port specifier
0: CPU Unit's RS-232C port
1: Serial Communications
Board port 1
2: Serial Communications
Board port 2
Always 0
Byte order
0: Most significant bytes first
1: Least significant bytes first
RS and ER signal control
0: No RS and ER signal control
1: RS signal control
2: ER signal control
3: RS and ER signal control
Area
S
C
N
CIO Area
CIO 0000 to CIO 6143
Work Area
W000 to W511
Holding Bit Area
H000 to H511
Auxiliary Bit Area
A000 to A447
A448 to A959
Timer Area
T0000 to T4095
Counter Area
C0000 to C4095
DM Area
D00000 to D32767
EM Area without bank
E00000 to E32767
Summary of Contents for SYSMAC CS Series
Page 2: ......
Page 4: ...iv ...
Page 30: ...xxx ...
Page 186: ...146 List of Instructions by Function Code Section 2 4 ...
Page 1320: ...1280 Model Conversion Instructions Unit Ver 3 0 or Later Section 3 35 ...
Page 1390: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2 ...
Page 1391: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits ...
Page 1392: ...1352 ASCII Code Table Appendix A ...
Page 1404: ...1364 Revision History ...