1092
8 BUILT-IN ETHERNET FUNCTION INSTRUCTIONS
8.2 Socket Communications Instructions
Processing details
• The SP.SOCRCV instruction reads the receive data of the connection specified by (s1) from the socket communications
receive data area (where the data received from an external device in each connection is stored) by the END processing
after the instruction execution.
• The execution status and the completion status of the SP.SOCRCV instruction can be checked with the completion device
(d2) and the completion status indication device (d2)+1.
• The following figure shows the execution timing of the SP.SOCRCV instruction.
Precautions
When reading receive data from the same connection, do not use this command together with the S.SOCRCVS instruction.
Operation error
Upon completion with an error, the completion status indication device (d2)+1 is turned on and an error code is stored in the
completion status (s2)+1.
For the error code stored in the completion status (s2)+1, refer to the following.
MELSEC iQ-R Ethernet User's Manual (Application)
• To avoid receiving too much amount of data, the SP.SOCRMODE instruction can be used to set the size of
receive data to limit the amount of receive data.
• By connecting the completion device of the SP.SOCRCV instruction to the execution instruction through a
normally closed contact, data can be read continuously even when it is received continuously.
• Completion device (d2)
This device turns on during END processing of the scan where the SP.SOCRCV instruction completes, and turns off during the next END processing.
• Completion status indication device (d2)+1
This device turns on or off depending on the completion status of the SP.SOCRCV instruction.
When completed successfully: The device remains off.
When completed with an error: The device turns on during END processing of the scan where the SP.SOCRCV instruction completes, and turns off during the
next END processing.
Error code
(SD0)
Description
2820H
The amount of data received exceeds the relevant setting area in the device/label memory in the receive data storage device.
3405H
The connection number specified by (s1) is a value other than 1 to 16.
·
·
(d1)+0
(d1)+1
(d1)+2
(d1)+n
CPU module
Receive data length
SP.SOCRCV
(reading
receive data)
Socket communications
receive data storage area
Connection number
specified by (s1)
Receive data
Receive data
Receive data
External device
Receiving
data
END
0
END
0
END
0
END
0
OFF
OFF
OFF
OFF
ON
ON
Sequence scan
SP.SOCRCV
instruction
Completion device (d2)
Completion status
indication device (d2)+1
Completed successfully
1 scan
Reading data
Execution of the instruction
Receiving data
Completed with an error
Содержание MELSEC iQ-R Series
Страница 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Страница 2: ......
Страница 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Страница 34: ...32 MEMO ...
Страница 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Страница 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Страница 204: ...202 5 SEQUENCE INSTRUCTIONS 5 3 Output Instructions Operation error There is no operation error ...
Страница 470: ...468 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 472: ...470 6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions Operation error There is no operation error ...
Страница 479: ...6 BASIC INSTRUCTIONS 6 6 Data Conversion Instructions 477 6 Operation error There is no operation error ...
Страница 504: ...502 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 518: ...516 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 520: ...518 6 BASIC INSTRUCTIONS 6 7 Data Transfer Instructions Operation error There is no operation error ...
Страница 754: ...752 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 756: ...754 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 758: ...756 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 760: ...758 7 APPLICATION INSTRUCTIONS 7 9 Real Number Instructions Operation error There is no operation error ...
Страница 895: ...7 APPLICATION INSTRUCTIONS 7 16 Ramp Signal Instruction 893 7 Operation error There is no operation error ...
Страница 917: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 915 7 Operation error There is no operation error ...
Страница 919: ...7 APPLICATION INSTRUCTIONS 7 20 Data Processing Instructions 917 7 Operation error There is no operation error ...
Страница 1415: ...13 SFC PROGRAM INSTRUCTIONS 13 1 SFC Control Instructions 1413 13 Operation error There is no operation error ...
Страница 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Страница 1795: ...25 TYPE CONVERSION FUNCTIONS 25 1 Converting BOOL to WORD 1793 25 Operation error There is no operation error ...
Страница 1805: ...25 TYPE CONVERSION FUNCTIONS 25 10 Converting WORD to DINT 1803 25 Operation error There is no operation error ...
Страница 1819: ...25 TYPE CONVERSION FUNCTIONS 25 21 Converting INT to DWORD 1817 25 Operation error There is no operation error ...
Страница 1950: ...1948 32 STRING FUNCTIONS 32 2 Extracting String Data From the Left Right Operation error There is no operation error ...
Страница 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Страница 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Страница 2082: ...2080 APPX Appendix 6 Process Control Program Examples 129 Set the default value of the loop tag ...
Страница 2093: ...APPX Appendix 7 List of Loop Tag Memory Areas Used by Process Control Instructions 2091 A MEMO ...
Страница 2109: ......