Example¶

Example¶
MODBUS interface of the client	COM1
Client writes to	Server 1
Data	sMask.wAND_Mask := 16#00F2 sMask.wOR_Mask := 16#0025
Source address at the client	sMask : COM_MOD_FCT22_TYPE
Target address at server	%MW0.8193 : 2001HEX = 8193DEC
The values of the WORD variables sMask.wAND_Mask and sMask.wAND_Mask on the client are applied as masks on %MW0.8193..%MW0.8195 on the server.

MODBUS request of the client¶
Server address	Function code	Server operand address	AND Mask	OR Mask	CRC
Server address	Function code	High / Low	High / Low	High / Low	High / Low
01HEX	16HEX	20HEX / 01HEX	00HEX / F2HEX	00HEX / 25HEX

MODBUS response of the server¶
Server address	Function code	Server operand address		AND Mask		OR Mask		CRC
Server address	Function code	High	Low	High	Low	High	Low	High	Low
01HEX	16HEX	20HEX	01HEX	00HEX	F2HEX	00HEX	25HEX	DAHEX	08HEX

Parameterization of the COM_MOD_MAST Function Block inputs¶
EN	COM	SLAVE	FCT	TIMEOUT	ADDR	Number of words	DATA
FALSE -> TRUE	1	1	22	Applicationspecific	8193	1	ADR (sMask)