1005
Serial Communications Instructions Section 3-24
PLC Setup Settings for CPU Unit’s RS-232C Port
DM Setup Area Settings for Serial Communication Board’s Ports
3-24-5 TRANSMIT VIA SERIAL COMMUNICATIONS UNIT: TXDU(256)
Purpose Outputs the specified number of bytes of data from one of the Serial Commu-
nications Unit’s serial ports. (The Serial Communications Unit must be Ver.
1.2 or later).
Ladder Symbol
Programming
Console address
Name Settings
Word Bit
162 0 to 15 No-protocol Mode Send
Delay
0000 to 210F hex,
0 to 99,990 ms decimal
(in 10-ms units)
164 8 to 15 No-protocol Mode Start Code 00 to FF hex
0 to 7 No-protocol Mode End Code 00 to FF hex
165 12 No-protocol Mode Start Code
Specifier
0: None
1: Use start code.
8 and 9 No-protocol Mode End Code
Specifier
0 hex: None
1 hex: Use end code.
2 hex: Use CR+LF.
0 to 7 No-protocol Mode Number of
Bytes of Data
00 hex: 256 bytes (default)
01 to FF hex: 1 to 255 bytes
Setup Area word Bit Name Settings
Port 1 Port 2
D32002 D32012 15 No-protocol Mode Send
Delay Specifier
0: Default (0 ms)
1: Use delay in bits 1 to 14.
0 to 14 No-protocol Mode Send
Delay Time
0000 to 7530 hex
0 to 300,000 ms decimal
(in 10-ms units)
D32004 D32014 8 to 15 No-protocol Mode Start
Code
00 to FF hex
0 to 7 No-protocol Mode End
Code
00 to FF hex
D32005 D32015 12 to 15 No-protocol Mode Start
Code Specifier
0 hex: None
1 hex: Use start code.
8 to 11 No-protocol Mode End
Code Specifier
0 hex: None
1 hex: Use end code.
2 hex: Use CR+LF.
0 to 7 Number of Bytes of Data 00 hex: 256 bytes (default)
01 to FF hex: 1 to 255
bytes
TXDU(256)
S
C
N
S: First source word
C: First control word
N: Number of bytes
0000 to 0100 hex (0 to 256)