Serial Communication Instructions; Txd - Omron SYSMAC CP Series Instruction & Reference Manual

Serial Communication Instructions

TXD

Instruction
TRANSMIT
Symbol
Applicable Program Areas
Area
Usage
Operands
Operand
S First source word
C Control word
N Number of bytes 0000 to 0100 hex (0 to 256)
C: Control word
15 12 11
C
Always 0
Operand Specifications
Area
CIO WR HR
S
OK OK OK
C, N
CP1E CPU Unit Instructions Reference Manual(W483)
Mnemonic Variations
TXD @TXD
Step program areas
OK
Description
8 7 4 3 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
Serial port specifier
1: CPU Unit's RS-232C port
2: Serial Option Board port
Word addresses
AR T C DM
OK OK OK OK
Function
code
Outputs the specified number of bytes of data
236 from the CPU Unit's built-in RS-232C port or the
Serial Option Board port.
TXD
TXD(236)
S S: First source word
C C: Control word
N N: Number of bytes
0000 to 0100 hex (0 to 256)
Subroutines
OK
Indirect DM addresses
Constants
@DM *DM
---
OK OK
OK
2 Instructions
Function
Interrupt tasks
OK
Data type Size
UINT Variable
UINT 1
UINT 1
CF Pulse bits TR bits
--- --- ---
2-369
2