Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 1044

Serial Communications Instructions
1004
Controlling Signals
00000
D
C
N
15
14
D: D00100
1 0
15 12 11
C: D00400
0
Always #0.
Related PLC Setup Settings
CX-Programmer Settings for the CPU Unit's Built-in RS-232C Port
RXD
When CIO 00001 turns ON, the
status of bit 15 of D00300 is
D00100
output as the RS signal and the
D00200
status of bit 14 is output as the
ER signal.
&10
13 12
0 0
Turns OFF ER signal.
Turns ON RS signal.
8 7 4 3 0
0 3 0
Byte Order
#0: Most significant bytes first
RS and ER Signal Control
#3: RS and ER signal control
Serial Port Specifier
#0: CPU Unit's built-in RS-232C port
Section 3-24