Modbus Rtu And Modbus/Tcp Register Map - Banner Sure Cross DX80 Instruction Manual

®
Sure Cross Radio Networks and Host Controller Systems

2.4 Modbus RTU and Modbus/TCP Register Map

Modbus/TCP and Modbus RTU provide device control and monitoring using holding registers in the 40000 register block.
Each wireless device in the system is allocated 16 holding registers. The Gateway uses the first 16 registers followed by
each Node in the network, based on the Node address. For Node 5, the starting Modbus registers are 1 + (Node# × 16) = 1
+ (5 × 16) = 81, the ending register is 97.
I/O Point
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
For example:
Device and Input
Registers
Connections
1 Gateway I/O 1
2 Gateway I/O 2
3 Gateway I/O 3
4 Gateway I/O 4
5 Gateway I/O 5
6 Gateway I/O 6
7 Gateway I/O 7
8 Gateway I/O 8
9 Gateway I/O 9
10 Gateway I/O 10
11 Gateway I/O 11
12 Gateway I/O 12
13 Gateway I/O 13
14 Gateway I/O 14
8
Gateway Modbus Holding Register
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Device and Input
Register
Connections
17 Node 01 I/O 1
18 Node 01 I/O 2
19 Node 01 I/O 3
20 Node 01 I/O 4
21 Node 01 I/O 5
22 Node 01 I/O 6
23 Node 01 I/O 7
24 Node 01 I/O 8
25 Node 01 I/O 9
26 Node 01 I/O 10
27 Node 01 I/O 11
28 Node 01 I/O 12
29 Node 01 I/O 13
30 Node 01 I/O 14
www.bannerengineering.com - Tel: +1.763.544.3164
Node Modbus Register
1 + (Node# × 16)
2 + (Node# × 16)
3 + (Node# × 16)
4 + (Node# × 16)
5 + (Node# × 16)
6 + (Node# × 16)
7 + (Node# × 16)
8 + (Node# × 16)
9 + (Node# × 16)
10 + (Node# × 16)
11 + (Node# × 16)
12 + (Node# × 16)
13 + (Node# × 16)
14 + (Node# × 16)
15 + (Node# × 16)
16 + (Node# × 16)
Device and Input
Register
Connections
33 Node 02 I/O 1
34 Node 02 I/O 2
35 Node 02 I/O 3
... ...
... ...
... ...
... ...
... ...
761 Node 47 I/O 9
762 Node 47 I/O 10
763 Node 47 I/O 11
764 Node 47 I/O 12
765 Node 47 I/O 13
766 Node 47 I/O 14