|
4 | 4 |
|
5 | 5 | Modbus Tools is set of program (client and server) with graphical user interface to work with standard Modbus Protocol. Modbus Tools are a free, open-source tools with a simple user interface written in C++/Qt. It implements TCP, RTU and ASCII versions of Modbus Protocol. |
6 | 6 | Software implements such Modbus functions as: |
7 | | - - 1 (0x01) – `READ_COILS`; |
8 | | - - 2 (0x02) – `READ_DISCRETE_INPUTS`; |
9 | | - - 3 (0x03) – `READ_HOLDING_REGISTERS`; |
10 | | - - 4 (0x04) – `READ_INPUT_REGISTERS`; |
11 | | - - 5 (0x05) – `WRITE_SINGLE_COIL`; |
12 | | - - 6 (0x06) – `WRITE_SINGLE_REGISTER`; |
13 | | - - 7 (0x07) – `READ_EXCEPTION_STATUS`; |
14 | | - - 15 (0x0F) – `WRITE_MULTIPLE_COILS`; |
15 | | - - 16 (0x10) – `WRITE_MULTIPLE_REGISTERS`. |
| 7 | +* 1 (0x01) – `READ_COILS`; |
| 8 | +* 2 (0x02) – `READ_DISCRETE_INPUTS`; |
| 9 | +* 3 (0x03) – `READ_HOLDING_REGISTERS`; |
| 10 | +* 4 (0x04) – `READ_INPUT_REGISTERS`; |
| 11 | +* 5 (0x05) – `WRITE_SINGLE_COIL`; |
| 12 | +* 6 (0x06) – `WRITE_SINGLE_REGISTER`; |
| 13 | +* 7 (0x07) – `READ_EXCEPTION_STATUS`; |
| 14 | +* 15 (0x0F) – `WRITE_MULTIPLE_COILS`; |
| 15 | +* 16 (0x10) – `WRITE_MULTIPLE_REGISTERS`. |
16 | 16 |
|
17 | 17 | ## About Modbus Client |
18 | 18 |
|
19 | 19 | The client implements access to a remote Modbus device. However, the client can work not only with one device, but with several devices that can be connected to a single network, which is especially useful when working with RTU and ASCII protocols, when access to all Modbus servers is realized through a single serial port. However, it can also be useful when using the TCP version of the protocol, for example, if you use the TCP->RTU bridge. |
20 | 20 | All work is done within a single project. The main entities in the project are Port, Device and DataViewItem. Port contains network settings for both TCP/IP and serial ports. Device contains settings for a single device (such as Modbus Unit Address, etc.). The DataViewItem contains a single data unit to be read from the remote device and has many formats to represent the current data. |
| 21 | + |
21 | 22 |
|
22 | 23 | ## About Modbus Server |
23 | 24 |
|
24 | 25 | The server implements Modbus server device and works like Modbus simulator. However, the server can not only simulate single device, but can simulate several devices that can be connected to a single network, which is especially useful when working with RTU and ASCII protocols, when access to all Modbus servers is realized through a single serial port. However, it can also be useful to simulate Modbus network using the TCP version of the protocol, for example, if you use the TCP->RTU bridge, Modbus server can replace this bridge with remote devices for testing purposes. |
25 | 26 | All work is performing within a single project. The main entities in the project are Port, Device, DataViewItem and Action. Port contains network settings for both TCP/IP and serial ports. Device contains settings for a single device (such as Modbus Unit Address, memory size etc). The DataViewItem contains a single data unit to be read/write from the device and has many formats to represent the current data. Action provides simulation capabilities (automatic change of device memory values). |
| 27 | + |
26 | 28 |
|
27 | 29 | ## Binary |
28 | 30 |
|
|
0 commit comments