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Serial Communications Instructions
Section 3-24
Example: Performing
Signal Control
When CIO 000001 is ON in the following example, the RS signal and ER sig-
nal are set according to the respective statuses of bits 15 and 14 in D00300.
3-24-4 RECEIVE: RXD(235)
Purpose
Reads the specified number of bytes of data from the specified port.
Ladder Symbol
Variations
Applicable Program Areas
C: D00400
S: D00300
Byte order
0: Disabled
RS and ER signal control
3: RS and ER signal control.
Not used.
3
1
3
4
20
0
1 0 0 0
ER signal set to 0
RS signal set to 1
15 14 13 12
D: First destination word
C: Control word
N: Number of bytes to store
0000 to 0100 hex (0 to 256 decimal)
RXD(235)
D
C
N
Variations
Executed Each Cycle for ON Condition
RXD(235)
Executed Once for Upward Differentiation
@RXD(235)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification
Not supported.
Block program
areas
Step program
areas
Subroutines
Interrupt tasks
OK
OK
OK
OK
Summary of Contents for CJ1G-CPUxx
Page 3: ...iv N o t i c e ...
Page 5: ...vi ...
Page 21: ...xxii Conformance to EC Directives 6 ...
Page 35: ......
Page 1131: ...1110 CJ series Instruction Execution Times and Number of Steps Section 4 2 ...