RS-232 Communication Element
Communication port settings
These properties define the RS-232 communication port settings, ensuring successful data transmission between your presentation system and an external device.
Communication Port Settings
Communication Port
- Select the COM (serial) or LPT (parallel) port used for RS-232 communication.
Baud Rate
- Defines the transmission speed in symbols per second (bps).
- Common values: 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200.
- Must match the external device settings.
Parity
Determines how parity checking is applied for error detection.
| Option | Description |
|---|---|
| None | No parity check (default). |
| Even | Ensures an even number of 1s in the data frame. |
| Odd | Ensures an odd number of 1s in the data frame. |
| Mark | Always sets the parity bit to 1. |
| Space | Always sets the parity bit to 0. |
Data Bits
- Defines the number of data bits per frame.
- Standard values: 5, 6, 7, or 8 bits (default: 8).
- Must match the external device settings.
Start Bits
- Specifies the leading bits before actual data transmission.
- Standard value: 1 bit.
Stop Bits
- Specifies the end of transmission bits.
- Standard values: 1, 1.5, or 2 bits (default: 1).
- Used to separate data packets.
Handshake
Defines flow control between sender and receiver to prevent data loss.
| Option | Description |
|---|---|
| None | No handshake (default). |
| XOn/XOff | Software-based handshake. Uses special characters to control data flow. |
| RTS/CTS | Hardware-based handshake using Ready-to-Send (RTS) and Clear-to-Send (CTS) signals. |
| DTR/DSR | Hardware-based handshake using Data Terminal Ready (DTR) and Data Set Ready (DSR) signals. |
Read Timeout
- Time limit (in milliseconds) for receiving a response from the external device.
- If no response is received within this time, a timeout error occurs.
Write Timeout
- Time limit (in milliseconds) for successfully sending a command.
- If data cannot be transmitted within this time, a timeout error occurs.
Remarks
- The correct RS-232 settings for communication with your external device can be found in its user manual.
- Incorrect port settings may result in failed communication or unexpected device behavior.
Important
- The communication port settings must match those of the external device.
- These settings apply only during playback, so RS-232 commands will only be sent if the specified port is available on the playback PC.