SMC Networks 1560 Modicon Programming Example Mstr, Enable 40400 Active, Abort Error 40410, 00032

Chapter 4 — Programming Considerations

Contents

		1560-MBP		Global Data
	Modbus Plus			Table		Description
		Address		Index
	13,29,45,61			24		Control Word
				25		Reference Word
	14,30,46,62			26		Control Word
				27		Reference Word
	15,31,47,63			28		Control Word
				29		Reference Word
	16,32,48,64			30		Control Word
				31		Reference Word
Modicon Programming Example - MSTR 5
enable -		40400	- active		Contents of registers in control block
					40400	= 5 Global write data instruction
abort -			- error
		40410			40401	= 0 Error code
					40402	= 32 Global Data block length
			- success			(Max 32 words)
		MSTR			40403	= 0 N/A
		00032			40404	= 0 N/A
					40410	= Source of the Global Out Data

This instruction “publishes” Global Data on the Modbus Plus network from the Host PLC. Up to 32 words can be transmitted from the Host, allowing up to 16 1560-MBP units to be controlled. When the 1560-MBP reads the Global Data it first examines the source node address to assure it matches the dip switch configured Host Node Address, and then retrieves the two words that relate to its node from the packet.

Controller	Node	Description
Address
40410	33	Control Word
40411		Reference Word
40412	34	Control Word
40413		Reference Word
•	•	•
•	•	•
40420	37	Control Word
40421		Reference Word
•	•	•
•	•	•
40440	48	Control Word
40441		Reference Word

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