Hardware
3-9
Serial Port Pin Connector Signals for RS-232/422 Applications
RxD- (Receive Data Negative) Input:
This pin accepts serial data sent by an RS-232 or RS-422 device. The serial data
received is expected to match the word length, baud rate, stop bits, and parity configuration of the particular port. The signal is
low true.
RxD+ (Receive Data Positive) Input:
This pin accepts serial data sent by an RS-422 device only. The signal is high true.
TxD- (Transmit Data Negative) Output:
This pin transmits serial data to an RS-232 or RS-422 device. The serial data
received is sent with the word length, baud rate, stop bits, and parity configured for the particular port. The signal is low true.
TxD+ (Transmit Data Positive) Output:
This pin transmits serial data to an RS-422 device only. The signal is high true.
CTS- (Clear To Send Negative) Input:
CTS- input is used as a hardware handshake line to prevent ChartScan from
transmitting serial data to an RS-232 or RS-422 device when it is not able to accept it. When RTS/CTS handshaking is selected,
ChartScan will not transmit data out TxD- while this signal is un-asserted (low). If XON/XOFF or no handshaking is selected,
the CTS- line is ignored when transmitting data. The signal is low true.
CTS+ (Clear To Send Positive) Input:
CTS+ input is used as a hardware handshake line to prevent ChartScan from
transmitting serial data to an RS-422 device when it is not able to accept it. The signal is high true.
RTS- (Request To Send Negative) Output:
RTS- output is used as a hardware handshake line to prevent an RS-232 or RS-422
device from transmitting serial data to ChartScan when it is not able to accept it. When automatic RTS/CTS handshaking is
selected, ChartScan will assert (high) the RTS- signal when greater than 4096 memory locations are available in its internal
buffers. If available memory drops below 4096 bytes, ChartScan unasserts (low) the RTS- signal. The signal is low true.
RTS+ (Request To Send Positive) Output:
RTS+ output is used as a hardware handshake line for an RS-422 device. The
signal is high true.
GND (Ground):
This signal sets the ground reference point for the other RS-232/RS-422 input and output signals.
Ethernet Interface Configuration
Your ChartScan unit can be operated over the ethernet provided it is configured for RS-232 serial communications
and it is properly connected to a network via a Net232 ethernet/RS-232 converter. For detailed instructions refer to
Net232 User’s Guide
, part number 1037-0901.
Содержание OMB-CHARTSCAN 1400
Страница 1: ...August 2002 OMB CHARTSCAN 1400 Portable Data Recorder p n OMB 483 0901 Rev 3 1...
Страница 6: ...iv ChartScan User s Manual...
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Страница 32: ...2 8 General Information ChartScan User s Manual Notes...
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Страница 117: ...ChartScan User s Manual Calibration 6 13 1 Connect an applicable calibration harness to each card Refer to figure below...
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Страница 126: ...A ii ChartScan User s Manual...
Страница 136: ...API Commands Appendix A A 10 ChartScan User s Manual Notes...
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Страница 230: ...Appendix C Registers Data Formats Queries ChartScan User s Manual C 13...
Страница 237: ...Registers Data Formats Queries Appendix C C 20 ChartScan User s Manual Notes...
Страница 257: ...E 2 ChartScan User s Manual Notes...
Страница 265: ...ASCII Code Summary Appendix F F 8 ChartScan User s Manual Notes...
Страница 269: ...Abbreviations Appendix H H 2 ChartScan User s Manual Notes...
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