SMC Networks user manual Reading from the 1560-MBP, Global Data Mstr Type

Chapter 4 — Programming Considerations

Contents

Modicon Programming Example - MSTR Type 1

enable -		- active	Contents of registers in control block
	40001		40001	= 1 Write instruction
abort -		- error	40002	= 0	Error code
	40010		40003	= 1	Length of the write
			40004 = 119 slave register to Write (40119)
		- success	40005	= 37 MBP Node address to write to
	MSTR
			40006 = 1		Slave Input Path for routing
	00002		40010	= Source of the data to the
				device attached to the 1560-MBP

This instruction would write one value into parameter 19 of the device attached to 1560-MBP node address 37. In the 1560-MBP register map this would be register 40119.

Note that the Slave Input Path value must be entered in order for the command to execute successfully. Valid values are from 1 to 8. Any other values will cause the command to fail.

4.2Reading from the 1560-MBP

Reading data from the 1560-MBP is independent of the Global Data Control mode selection. There are two methods for obtaining data from the 1560-MBP units as outlined in the following section.

4.2.1 Global Data - MSTR Type 6

The 1560-MBP publishes Global Out Data which can be accepted by any other node on the Modbus Plus port. The structure of the Global Data sent out in is as follows:

0

1

2

3

4

5

6

7

8

9

Status Word

Feedback

Adaptor I/O-A1

Adaptor I/O-A2

Adaptor I/O-B1

Adaptor I/O-B2

Adaptor I/O-C1

Adaptor I/O-C2

Adaptor I/O-D1

Adaptor I/O-D2

Global Out Data

(1)

(2)

(3)

Optional Global Data

(1)Datalink A only - 4 words

(2)Datalink A & B only - 6 words

(3)Datalink A, B, C & D - 10 words

Global Data from each 1560-MBP unit: Note the minimum length of 2 words can be increased up to 10 words by selectively enabling Datalinks using the dip switches

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