Main Content

Modem Status

Return state of modem control lines

  • Library:
  • Simulink Real-Time / RS232 / Mainboard

  • Modem Status block

Description

The Modem Status block reads the state of the input modem control lines.

This block has outputs of type Boolean. If the input voltage is positive, the output is true. If the input voltage is negative, the output is false.

Ports

Output

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If true, the modem is ready to receive data.

Dependency

To make this output visible, select the CTS parameter.

If true, the modem is ready to send and receive data.

Dependency

To make this output visible, select the DSR parameter.

If true, the modem is receiving a carrier from a remote device.

Dependency

To make this output visible, select the DCD parameter.

Parameters

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Select this check box to monitor the CTS line of the modem.

Selecting this parameter makes the CTS port visible.

Programmatic Use

cts

Select this check box to monitor the DSR line of the modem.

Selecting this parameter makes the DSR port visible.

Programmatic Use

dsr

Select this check box to monitor the DCD line of the modem.

Selecting this parameter makes the DCD port visible.

Programmatic Use

dcd

Enter the base sample time or a multiple of the base sample time. -1 means that sample time is inherited.

Programmatic Use

sampletime

Selects the RS232 serial port for communications.

Programmatic Use

port
Introduced in R2020b