Mini Modbus 4DI
User Manual
3.3. Types of Modbus Registers
There are 4 types of variables available in the module
Type
Beginning
address
Variable
Access
Modbus
Command
1
00001
Digital Outputs
Bit
Read & Write
1, 5, 15
2
10001
Digital Inputs
Bit
Read
2
3
30001
Input Registers
Registered
Read
3
4
40001
Output Registers
Registered
Read & Write
4, 6, 16
3.4. Communication settings
The data stored in the modules memory are in 16-bit registers. Access to
registers is via MODBUS RTU or MODBUS ASCII.
3.4.1. Default settings
Parameter name
Value
Address
1
Baud rate
19200
Parity
No
Data bits
8
Stop bits
1
Reply Delay [ms]
0
Modbus Type
RTU
Expansion Module– 4 digital inputs
User Manual
Version 1.2
6 / 12
