Example¶
| MODBUS interface of the client | COM1 |
| Client writes to | Server 1 |
| Data | sData : COM_MOD_FCT23_TYPE sData.pByDataWrite := ADR(awWriteWord) sData.pByDataRead := ADR(awReadWord) sData.wDataAddressRead := 4193 sData.wNumDataUnitsRead := 5 awWriteWord[0] := 1 awWriteWord[1] := 2 awWriteWord[2] := 3 |
| Source address at client | awWriteWord : ARRAY[0..2] OF WORD |
| Target address at client | awReadWord : ARRAY[0..4] OF WORD |
| Target address at server | %MW0.8193 : 2001HEX = 8193DEC |
| Source address at server | %MW0.4193 : 1001HEX = 4193DEC |
| The values of the WORD variables awWriteWord[0]..awWriteWord[2] on the client are written to %MW0.8193..%MW0.8195 on the server, the values read from server’s . %MW0.4193..%MW0.4195 are written to the client’s variables awReadWord[0]..awReadWord[4] | |
| EN | COM | SLAVE | FCT | TIMEOUT | ADDR | Number of words | DATA |
|---|---|---|---|---|---|---|---|
| FALSE -> TRUE | 1 | 1 | 17 | Applicationspecific | 8193 | 3 | ADR (sData) |