Data communication 15.02.2020 09:46 15.02.2020 09:51

The examples show the basic recommended connections, which are of course not the only possible ways of connection.

 
Connection of two TC700 systems via RS-485 interface (submodule MR-0112) 

The connection of two TC700 systems via a serial channel with the RS-485 interface is shown in Fig. 1. The connection assumes two systems and therefore the bus termination is connected on both sides (see this article). In the case of interconnection of several systems, the terminations (terminals BT + and BT–) are interconnected only on the end systems connected to the bus. Other parameters (wires, installation principles) apply according to the articles related to RS-485.

Fig. 1 Connection diagram of two TC700 systems with RS-485 interface (submodule MR-0112)

 

Connection of TC700 and NS950 systems by RS-485 interface

The connection of the TC700 and NS950 systems via a serial channel with the RS-485interface is shown in Fig. 2. The connection assumes two systems and therefore the bus termination is realized on both sides. In the case of interconnection of several systems, the termination is connected only on the end systems connected to the bus.

Fig. 2 Connection diagram of TC700 and NS950 systems with RS-485 interface 

Connection of TC700 system to PC, RS-232 interface

If we want to connect the TC700 via a serial channel to a PC (eg for programming - if we do not want or cannot use the USB or ETHERNET interface), we can use the RS-232 interface and the cable connected according to Fig. 3 (corresponds to cable KB-0209, which can be ordered under order number TXN 102 09). It is necessary to install the MR-0102 submodule on the used TC700 communication channel.

Fig. 3 Diagram of TC700 connection to PC, RS-232 interface

 

Module XL-0471 - example of TC700 connection, RS-485 interface

If we require the connection of TC700 communication channels (eg PLC network implementation), we want to conveniently connect other devices to the communication interface of the TC700 system, or we want to increase the overvoltage resistance, we can use the XL-0471 module. The module contains an RS-485 interface splitter, with the through connection (terminal blocks A and B) passing directly through the module and the branch (terminal block C) being protected by overvoltage protection (lightning arrester, transil). For an example of the module connection, see Fig. 4. The module also allows direct connection of the cable shield. The shielding of the through branches is interconnected and connected to terminal G1 (eg in the case of a through cable we do not have to ground the shield on the module), the branch shield is connected to terminal G2, to which the overvoltage protection is connected and is connected to the switchboard ground (working grounding ).

Fig. 4 Wiring diagram of XL-0471 module (connection of TC700, RS-485 systems)