English
The MR-0122 submodule ensures the conversion of TTL signals of the serial interface to the galvanically separated RS422 interface. The interface allows the connection of two cooperating devices (point-to-point). In justified cases (eg connection of ID-0x series panels - see chapter 3.4.5) it is possible to connect the control of transmitting and receiving amplifiers using soldering connection points (see documentation) and use this interface in a monomaster bus arrangement.
Each individual line (RxD and TxD) must be terminated at the end of the line with terminating resistors.
Tab.3.10.1.3 Technical parameters of piggyback MR-0122
| Maximum baud rate
Maximum line length Output level (difference levels) Internal power supply External power supply stability ripple TTL / RS insulation voltage |
500 kBd
1200 m * max. ±6 V 5 V / max. 30 mA 5 V / max. 100 mA ±5% 100 mV 2 kV |
- The maximum baud rate may not be reached at the maximum line length.
Tab.3.10.1.4 Connection of connector A of the serial channel when the submodule MR-0122 is fitted (applies also to connector B)
| Connector A (B) | Clamp | Signal | Signal type | Use |
|
|
A1 | +5V | Power output +5V | |
| A2 | CTS– | input | control signal 1) | |
| A3 | RxD– | input | data signal | |
| A4 | RTS– | output | control signal 1) | |
| A5 | TxD– | output | data signal | |
| A6 | GND | signal ground | ||
| A7 | CTS+ | input | control signal 1) | |
| A8 | RxD+ | input | data signal | |
| A9 | RTS+ | output | control signal 1) | |
| A10 | TxD+ | output | data signal |
1) The use of the signal is described in the manual Serial communication of Tecomat TXV 001 06 programmable controllers. The idle level of the signal corresponds to the value logic 1.