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What does the "4001" refer to?

3/24/2016 6:45 PM	Rate (0)
Adex265 Posts: 8 Rating: (0)	Hi What does the "4001" refer to? Let's say I have a global DB in the slave PLC and in that DB I have 4 different arrays full of real and Dint values. I want to read one of the arrays from my master PLC. So how would I use the "MB_DATA_ADRESS" , "MB_DATA_LEN" and "MB_DATA_Pointer" parameters of the MODBUS client block. How would I use of the "MB_HOLD_Register" parameter in the MODBUS server block of the slave PLC? Sincerely, ------------------------------------------------------------------------------------------ Split from Tips and sample program for MODBUS TCP.
Adex265 Posts: 8 Rating: (0)	Last edited by: Min_Moderator at: 3/29/2016 1:30:22 PM New subject after splitting
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3/29/2016 4:32 PM	Rate (0)
MAZENJER Silver Member Joined: 8/31/2013 Last visit: 3/20/2025 Posts: 607 Rating: (41)	Hello The Modbus Address should be started at 40001 You can see this to better understanding https://www.dmcinfo.com/latest-thinking/blog/id/8869/using-an-s7-1200-plc-as-a-modbus-tcp-slave
	Last edited by: The Helping Hand at: 3/30/2016 12:28:18 PM Made the link clickable Warm Regards MAZENJER
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