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Appendix 5 Ethernet
App5-31
Read
Read Words from PLC Memory
int HKEtn_ReadPlcMemory(WORD *dp,unsigned short Wordcnt,int DeviceType,DWORD
addr,char *lpAddr, int DFlag=1)
This function is retained until PLC data is transferred from the V7 series.
•
Parameters
*dp
Target pointer of the data to be read
Wordcnt
Word count to be read (max. 2000 words)
DeviceType
Address of the device to be read (Refer to “Chapter 2” to “Chapter 33.”)
addr
Top memory address to be read
* For YOKOGAWA or YASKAWA PLCs, specify a number “
−
1” for the
address (addr).
Example:
D400
→
399 D25
→
24
*lpAddr
IP address shown as a string of characters separated by dots
Example:
“192.168.XXX.XXX”
DFlag
0, 1, 2 (Refer to the table below.)
•
Return values
Success
TRUE
Failure
FALSE
Error details
Get using HKEtn_GetLastError ().
•
Priority and communication procedure depending on the DFlag setting are shown below.
Contents
Word Count
No. 1
1
No. 2
1
•
•
•
•
•
•
No. n
1
DFlag
Priority
Communication Procedure
0
Communications
1
Display
2
Display
PC
Read/write request
V7
PLC
Memory card
Response
Acknowledge of completion
Response
PC
Read/write request
V7
PLC
Memory card
Acknowledge of completion
Содержание V Series
Страница 1: ...V Series...
Страница 35: ...2 10 2 Allen Bradley PLC Please use this page freely...
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Страница 49: ...6 4 6 FANUC PLC Please use this page freely...
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Страница 79: ...12 8 12 KEYENCE PLC Please use this page freely...
Страница 95: ...14 8 14 LG PLC Please use this page freely...
Страница 119: ...16 20 16 MITSUBISHI ELECTRIC PLC Please use this page freely...
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Страница 155: ...24 12 24 Siemens PLC Please use this page freely...
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Страница 185: ...33 6 33 Yokogawa Electric PLC Please use this page freely...
Страница 215: ...App2 8 Appendix 2 n 1 Connection Multi link 2 Please use this page freely...
Страница 221: ...App3 6 Appendix 3 n 1 Connection Multi link Please use this page freely...
Страница 225: ...App4 4 Appendix 4 1 n Connection Multi drop Please use this page freely...
Страница 317: ...App6 48 Appendix 6 Universal Serial Communications Please use this page freely...