1556
16 ETHERNET INSTRUCTIONS
16.3 Fixed Buffer Communications Instructions
Processing details
• These instructions read the receive data (fixed buffer communications area) of the connection specified by (s1) of the
module specified by (U). These instructions can be used only for the connections for which "fixed buffer communication
(with/without procedure)" is set as the communication means.
• The execution status and the completion status of the BUFRCV instruction can be checked with the completion device (d2)
and the completion status indication device (d2)+1.
• The following figure shows the operation at completion of the BUFRCV instruction.
• The BUFRCV instruction is executed on the rising edge (OFF to ON) of the socket/fixed buffer receive status signal
(Un\G1900016 to Un\G1900023).
When the BUFRCV instruction reads receive data from the same connection, it cannot be used in combination
with the BUFRCVS instruction (for use in interrupt programs).
Operation error
[Reading receive data from the sending station to the own station]
No.: Connection No.
• Completion device (d2)
This device turns on during END processing of the scan where the BUFRCV 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 BUFRCV 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 BUFRCV instruction completes, and turns off during the next
END processing.
Error code
((s2)+1)
Description
C000H to CFFFH
MELSEC iQ-R Ethernet User's Manual (Application)
BUFRCV
(d1)
·
·
·
·
·
No.1
No.16
No.n
No.1
No.16
No.n
BUFSND
CPU module
CPU module
[Own station]
[Sending station]
Ethernet module
Ethernet module
Receive data length
Receive data
Fixed buffer data area
Fixed buffer data area
END
0
END
0
END
0
END
0
OFF
OFF
OFF
OFF
ON
ON
Sequence scan
BUFRCV instruction
Completion device (d2)
Completion status
indication device (d2)+1
Completed with an error
Completed successfully
1 scan
Storing receive data
Receiving data
Execution of the instruction
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: ......