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Figure 43: Serial Port 1
1. In the MENU, touch the ADV SET button.
The PASSWORD screen appears.
2. Key in the password and confirm with the √ button.
The ADVANCED SETTINGS MENU appears.
3. Touch the SERIAL MON button.
The SERIAL PORT MONITOR 1 screen appears, see Figure 43: Serial Port 1 on page 45.
4. Touch the < or > buttons to select next port, see Figure 44: Serial Port 3 on page 45.
5. Touch the Rx/Tx buttons to show the Received/Transmitted data.
6. Touch the ASCII/HEX buttons to show the characters in ASCII code or in HEX values.
7. Touch the ← button to return to ADVANCED SETTINGS MENU.
Note All serial ports are configured the same way, the Serial Port screen has the following options:
•
Baud rate: - Baud rate is a setting for Modbus devices, NMEA talkers, and other devices. It is also known
as symbol rate and modulation rate. The term roughly means the speed that data is transmitted. It is a
derived value based on the number of symbols transmitted per second. Valid values are: 1200, 2400,
4800, 9600, 19200, 38400, 57600 or 115200. The default value for NMEA is 4800. The default value for
Modbus communication is 19200.
•
Data bits: - The numbers of data bits in each character can be 7 (for true ASCII), 8 (for any kind of data,
as this matches the size of a byte) 8 data bits are almost universally used in newer applications. 7 bits
is only used on special occasions. Valid values are: 7 or 8. The default value for NMEA and Modbus
communication is 8.
•
Stop bits: - Stop bits sent at the end of every character allow the receiving signal hardware to detect the
end of a character and to resynchronize with the character stream. Electronic devices usually use one
stop bit. Valid values are: 1 or 2. The default value for NMEA and Modbus communication is 1.
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Parity: - Parity is a method of detecting errors in transmission. When parity is used with a serial port, an
extra data bit is sent with each data character, arranged so that the number of 1 bits in each character,
including the parity bit, is always ODD or always EVEN. If a byte is received with the wrong number of 1's,
then it must have been corrupted. However, an EVEN number of errors can pass the parity check. Valid
values are: N ( None ), O ( Odd ) or E ( Even ). The default value for NMEA is N (None). The default value
for Modbus communication is E (Even)
45 | Operation
Figure 44: Serial Port 3
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