Used to set parameters related to the device's five serial ports. There are tabs for basic and advanced parameters.
These are the most often used set of serial parameters.
Baud Rate | Baud rate in bits per second (bps). Most common is 9600 bps. |
Parity | Type of parity. N = no parity, O = odd parity, E = even parity. Most common is 'N'. |
Data | Number of data bits. Most common is 8. |
Stop | Number of stop bits. Most common is 1. |
Data Mode | Data mode for modbus messages. RTU = binary bytes, ASCII = text characters. Not used for non-modbus messages. Most common is 'RTU'. |
Timeout | Milliseconds to wait until the start of a response message. If no data is received in this amount of time the read operation is cancelled. |
Each port has the same set of parameters arranged in a row. The exceptions are COM0 and COM2. COM0 does not have RTS keying. COM2 has RS-485 whereas the other serial ports do not.
Max Intercharacter Time | Max time, in milliseconds, allowed between characters of the same message. Used to determine the end of a message. |
RTS Keying | Used to enable and disable flow control. |
Key Delay | Milliseconds to wait prior to sending the message. |
Dekey Delay | Milliseconds to wait after sending the message. |
RS-485 | There are two COM2 serial ports on the Series 100 device. One supports RS-232 and the other supports RS-485. This option is used to enable RS-485 two wire or four wire. If 'none' is selected the RS-485 serial port is not enabled and only the RS-232 port can be used. The RS-232 port is always enabled and can, therefore, be used even when RS-485 is. |
Ignore 0xFX | When enabled the receiving serial port will ignore any data bytes that contain all 1's in the first four bits (ie. 0xF) at the start of a message. The IP100 will wait for a non 0xF byte before determining the start of the message. This can be used to squelch invalid characters caused by noise from the attached serial devices (e.g. carrier key noise on older data radios). |