DS62-Network, DS62-MD4 Network/Modem Host Module
Serial Port Configuration
Handshaking, Baud Rate, Word Size, Stop Bits, and Parity are configured through either the serial or Ethernet ports using the menus. RTS and DTR Line Drivers can only be configured through the phone line via a modem. The default settings are 9600bps, 8 data bits, no parity, one stop bit, RTS and DTR High.
IMPORTANT: Changing the Host module serial port configuration could create a communications
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PortDevice | Baud | Word | Stop | ParityHandshakeLineDrive | ||||||||
Type | Name | Rate | Size | Bits | DTR | RTS | ||||||
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1 | RS232 | 9600 | 8 | 1 | None None | HI HI | ||||||
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| Handshaking | ...................... | 1 |
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| Baud | Rate |
| 2 |
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| Word | Size |
| 3 |
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| Stop | Bits |
| 4 |
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| Parity |
| 5 |
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| RTS Line Driver Inactive State... | 6 |
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| DTR Line Driver Inactive State... | 7 |
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Enter Request :1
Handshaking
For a simple communication between modems three connected lines are needed: TX, Rx, and Ground. For the data to be transmitted, both sides have to be clocking the data at the same baud rate. While this method is sufficient for most applications, it is limited in being able to respond to problems such as the receiver getting overloaded. This is where serial handshaking can help.
Select “Handshaking” and the DS displays with the following:
Default is None
Select handshaking: 1 For None
2 For Software Handshaking
3 For Hardware Handshaking Enter Request :
1.Software Handshaking: This style uses actual data bytes as control characters. The lines necessary are TX, Rx, and ground since the control characters are sent over the transmission line like regular data. The two control characters, XON and XOFF are characters sent by the receiver of the data to halt the transmitter during communication.
NOTE: A drawback to this method is also the most important fact to keep in mind. In ASCII transmissions these character values are
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