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SmartVue Operator’s Manual
122
10-0004-R13
21.4 Modbus Register Mapping
The tables below show the registers available using the Modbus protocol. There are
different ways to address the registers: Offset, Register and Modicon. The SmartVue
config screens use the Register column. Modicon may have two addresses for the same
register.
21.4.1 Discrete I/O (Function Code 2 - Read Only bit)
Modbus Discrete I/O Registers (Fixed
Mapping)
Function Code 2 - Read Only bit
Offset
Register
Modicon
Name
0
1
10001
Digital Input Valid
1
2
10002
Digital Input Valid
2
3
10003
Digital Input Valid
3
4
10004
Digital Input Valid
4
5
10005
Digital Input Valid
5
6
10006
Digital Input Valid
Unused
Unused
8
9
10009
Digital Output Valid
9
10
10010
Digital Output Valid
10
11
10011
Digital Output Valid
11
12
10012
Digital Output Valid
12
13
10013
Digital Output Valid
13
14
10014
Digital Output Valid
Unused
Unused
16
17
10017
Digital Input
17
18
10018
Digital Input
18
19
10019
Digital Input
19
20
10020
Digital Input
20
21
10021
Digital Input
21
22
10022
Digital Input
Unused
Unused
24
25
10025
Digital Output
25
26
10026
Digital Output
26
27
10027
Digital Output
27
28
10028
Digital Output
28
29
10029
Digital Output
29
30
10030
Digital Output