993
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
3-24-4 RECEIVE: RXD(235)
Purpose Reads 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
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
RXD(235)
D
C
N
D: First destination word
C: Control word
N: Number of bytes to store
0000 to 0100 hex (0 to 256 decimal)
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