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988
Serial Communications Instructions
Section 3-24
Board in the interrupt task if a TXD(236)/RXD(235) instruction is being exe-
cuted for the Serial Communications Board in the cyclic task. An error will
occur and the ER Flag will be turned ON if a TXD(236)/RXD(235) instruction
is executed for the Serial Communications Board in the interrupt task when
another TXD(236)/RXD(235) instruction was being executed for the Serial
Communications Board in the cyclic task. (These instructions cannot be pro-
grammed in both the cyclic and interrupt tasks even if they are executed for
different ports in the Serial Communications Board.)
Related Flags and Words
The following PLC Setup settings and Auxiliary Area flag can be used as
required when executing TXD(236).
PLC Setup Settings for CPU Unit’s RS-232C Port
DM Setup Area Settings for Serial Communication Board’s Ports
Auxiliary Area
Send Ready Flags
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: None
1: Use end code.
2: Use CR+LF.
0 to 7
No-protocol Mode Number of
bytes of Data
00: 256 bytes
01 to FF: 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: None
1: Use start code.
8 to 11
No-protocol Mode End
Code Specifier
0: None
1: Use end code.
2: Use CR+LF.
Port
Address
Contents
CPU Bus Unit’s built-in RS-232C Port
A39205
ON when data can be sent in
the no-protocol mode.
Serial Communications Board port 1
A35605
Serial Communications Board port 2
A35613
Summary of Contents for SYSMAC CS1D-CPU**
Page 3: ...iv...
Page 29: ...xxx...
Page 185: ...146 List of Instructions by Function Code Section 2 4...
Page 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Page 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Page 1391: ...1352 ASCII Code Table Appendix A...