Connection of the Processor Module to the CS31 system busΒΆ
Note
The PM56xx Processor Module does not support the CS31 system bus.
COM1 of the \ Terminal Base
The Processor Module can be used as a CS31 bus master. The connection is performed via the serial interface COM1 used as a CS31 system bus.
Pin assignment
| Pin | Signal | Interface | Description | ||
|---|---|---|---|---|---|
Terminal block removed |
Terminal block inserted |
1 | Terminator P | RS-485 | Terminator P |
| 2 | RxD/TxD-P | RS-485 | Receive/Transmit, positive | ||
| 3 | RxD/TxD-N | RS-485 | Receive/Transmit, negative | ||
| 4 | Terminator N | RS-485 | Terminator N | ||
| 5 | RTS | RS-232 | Request to send (output) | ||
| 6 | TxD | RS-232 | Transmit data (output) | ||
| 7 | SGND | Signal Ground | Signal Ground | ||
| 8 | RxD | RS-232 | Receive data (input) | ||
| 9 | CTS | RS-232 | Clear to send (input) | ||
Attention
:strong:Unused connector!
Make sure that the terminal block is always connected to the terminal base, even if you do not use the interface.
With connecting the terminals 1-2 and 3-4, a pull-up and a pull-down resistor can be activated (see chapter Serial Interface COM1 Serial Interface COM1 of the Terminal Bases.