I-7242D user manual
I-7242D DeviceNet/Modbus RTU Gateway User’s Manual, July 2006, Version 1.1 22/124
2.6 Modbus Devices Support
The I-7242D supports many kinds of Modbus commands. When users
want to use Modbus RTU devices on the DeviceNet network, they must pay
attention that their Modbus RTU devices can support what kind of the Modbus
function codes described in chapter 8. However, I-7242D also supports special
Modbus commands by the specific “User-defined Modbus Command” object
(Class ID: 0x65). The Modbus functions supported in the I-7242D are as Table
2-14.
Table 2-14 Modbus functions supported in the I-7242D
Function Code
Modbus Command
0x01 Read
Coil
Status
0x02
Read Input Status
0x03
Read Holding Registers
0x04
Read Input Registers
0x0F
Force Multiple Coils
0x10
Preset Multiple Registers