Q. How to confirm the connection with Modbus/RTU slave device.
A.
This library can communicate by Modbus/RTU communication as Modbus Master on your PC.
Most of Modbus/RTU slave devices support RS-485 serial communication.
Unfortunately, the general PC does not have RS-485 port on it.
CONTEC provides the serial communication products as below.
You can expand the RS-422/485 ports when you buy these products, separately
and install it on your PC.
And these RS-422/485 ports can be handled as ttyCom port (or Standard COM)
on your PC.
You can handle Modbus/RTU slave device through these expanding RS-485
ports with this library.
And also, you can use ModbusRTU Master Communication
Sample included this library to communicate by Modbus/RTU communication,
immediately.
You can download the datasheet or the hardware manual for CONTEC's products
from CONTEC's website.
Please refer each datasheet or each hardware manual to know the product's
specification, the way to install to your PC and the communication cable
and so on.
▪USB Micro Converters
COM-1PD2-USB
COM-1PD(USB)H
▪USB Units
COM-4PDHN-USB
▪PCI Express Bus Boards
COM-1PDH-LPE
COM-2PD-LPE
COM-2PD-PE
COM-4PD-PE
▪PCI Bus Boards
COM-2DL-PCI
COM-4DL-PCI
COM-1PD(LPCI)H
COM-2PD(LPCI)H
COM-2PD(PCI)H
COM-4PD(PCI)H