20 SERIAL COMMUNICATION INSTRUCTIONS
20.7 Reading the Data Send/Receive Status
1695
20
Processing details
• The execution status of the instruction to the module specified by the start I/O number is read and stored in the device
specified by (d) and later.
• In the associated bit of the device specified by (d), "1" is stored when each instruction starts its processing, and "0" is stored
when the instruction completes its processing. Completion of processing of each instruction is at the time when the
completion flag of the instruction changes from on to off.
• If the instruction has been set to be executed while being on, the G(P).SPBUSY instruction operates every scan while the
read instruction is on; if the instruction has been set to be executed at the rise, it operates only one scan when the read
instruction rises from off to on.
• While the G(P).SPBUSY instruction is active, another instruction can be executed. In addition, while another instruction is
active, the G(P).SPBUSY instruction can be executed.
Operation error
(1) Execution status of the G(P).ONDEMAND, G(P).OUTPUT, G(P).PRR, or G(P).BIDOUT instruction for channel 1
(2) Execution status of the G.INPUT or G(P).BIDIN instruction for channel 1
(3) Execution status of the G(P).ONDEMAND, G(P).OUTPUT, G(P).PRR, or G(P).BIDOUT instruction for channel 2
(4) Execution status of the G.INPUT or G(P).BIDIN instruction for channel 2
(5) Execution status of the G(P).GETE or G(P).PUTE instruction
(6) Execution status of the G(P).CPRTCL instruction for channel 1
(7) Execution status of the G(P).CPRTCL instruction for channel 2
Error code
(SD0)
Description
4000H to 4FFFH
MELSEC iQ-R CPU Module User's Manual (Application)
(d)+1
0
b15
b6 b5 b4 b3 b2 b1 b0
(7) (6) (5) (4) (3) (2) (1)
(d)+0
…
Summary of Contents for MELSEC iQ-R Series
Page 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Page 34: ...32 MEMO ...
Page 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Page 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Page 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Page 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Page 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Page 2109: ......