RS422/RS485 (N031)
The optional N031 interface provides an RS422 or RS485 interface (X300). The interface is executed on a 9-pin D-sub socket.
Fig.13: RS485 interface X300.The maximum baud rate on both channels is 115 kbit. The interface parameters are set via the operating system or from the PLC program.
PIN | Signal | Type | Description |
|---|---|---|---|
2 | TxD+ | Data-Out + | Transmit 422 |
3 | RxD+ | Data-In + | Receive 422 |
5 | GND | Ground | Ground |
6 | VCC | VCC | +5 V |
7 | TxD- | Data-Out - | Transmit 422 |
8 | RxD- | Data-In - | Receive 422 |
For RS 485 pins 2 and 3 (data +) must be connected, and pins 7 and 8 (data -).
By default the interface is parameterized as follows on delivery:
Function | Status |
|---|---|
Echo on | off |
Echo off | on |
Auto send on | on |
Always send on | off |
Auto receive on | on |
Always receive on | off |
Term on | on |
Term on | On |
Other configurations for the RS485 interface
Other configurations for the RS485 interface can be ordered ex factory. The following options are available:
- N031-0001 RS485 with echo, end point (terminated).
- N031-0002 RS485 without echo, stub (without termination).
- N031-0003 RS485 with echo, stub (without termination).
- N031-0004 RS422 full duplex end point (terminated).
An RS485 interface cannot be configured retrospectively and must always be ordered ex factory as required.