5-56
ES45 Owner's Guide
5.14.8 com*_modem
The com1_modem and com2_modem environment variables are used to
tell the operating system whether a modem is present on the COM1 or
COM2 ports, respectively. From the settings of these variables, the op-
erating system determines whether the port should assert a signal
DTR.
Syntax
set com*_modem modem_value
modem_value
Defined values are:
on—Modem is present.
off—Modem is not present (default value).
If you attach a modem to the COM1 or COM2 port, set the modem_value to on.
This setting tells the operating system to assert a DTR (data terminal ready)
signal to let the modem know that there is hardware attached. The modem re-
sponds with a DSR (data set ready) signal.
Example
P00>>> set com1_modem on
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