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Contents
Relationship between Global Data from Host and 1560-MBP Control & Reference
Words: The diagram shows an example if Slave 37 was configured for Global Data
Control and where the Control/Reference words would come from in the Global Data
from a Host.
The following table details the relationship between the Modbus Plus
addresses and the Global Data Table:
Chapter 4 — Programming Considerations
Control Word
Reference
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
Word
0
2
4
6
8
10
12
30
Global Data Sent from Host
(2 words per slave)
Slave 48
From Global Data Table
MSTR Type 1 accessible
only
Global Write Space
(Slave 37)
Slave 33
1,17,33,49 0
1
2,18,34,50 2
3
3,19,35,51 4
5
4,20,36,52 6
7
5,21,37,53 8
9
6,22,38,54 10
11
7,23,39,55 12
13
8,24,40,56 14
15
9,25,41,57 16
17
10,26,42,58 18
19
11,27,43,59 20
21
12,28,44,60 22
23
1560-MBP
Modbus Plus
Address
Global Data
Table
Index
Description
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Control Word
Reference Word
Slave 37
1560-MBP