Basic Configuration
Accept Break: Determines whether the port will accept breaks received from the
attached device. When enabled, breaks received at the port will be passed to any
port that this port is connected to. When disabled, breaks will be refused at this
port. (Default = On.)
Port Mode Parameters:
Port Name: Allows you to assign a name to the Serial Port. (Defaults; Serial Ports
1 to 8 = undefined; Internal Modem Port = MODEM.)
Port Mode: The operation mode for this port. (Defaults; Serial Ports 1 and 2 =
Any-to-Any Mode; Serial Ports 3 to 8 = Passive Mode; Internal Modem Port =
Modem Mode)
Passive Mode and Buffer Mode are not available at Serial Port 1 (the Setup
The Port Mode for the Internal Modem Port cannot be changed, and will
always be set to Modem Mode.
Depending on the Port Mode selected, the RSM-8R4 will also display the additional
prompts listed below. In the Text Interface, these parameters are accessible via a
submenu, which will only be active when the appropriate port mode is selected. In
the Web Browser Interface, fields will be "grayed out" unless the corresponding port
mode is selected.
Any-to-Any Mode: Allows communication with a local PC and permits access
to command mode. When Any-to-Any Mode is selected, the following mode
specific parameter can also be defined:
DTR Output: Determines how DTR will react when the port disconnects. DTR
can be held low, held high, or pulsed for 0.5 seconds and then held high.
(Default = Pulse.)
Modem Mode: Permits access to command mode and simplifies connection
to an external modem. Modem Mode ports can perform all functions normally
available in Any-to-Any Mode, but Modem Mode also allows definition of a Hang-
Up String, Reset String, and Initialization String:
Reset String: Redefines the modem reset string. The Reset String can be
sent prior to the Initialization string. (Default = ATZ.)
Initialization String: Defines a command string that can be sent to initialize a
modem to settings required by your application.
(Default = AT&C1&D2S0=1&B1&H1&R2)
Hang-Up String: Although the RSM-8R4 will pulse the DTR line to hang-up an
attached modem, the Hang-Up string is often useful for controlling modems
that do not use the DTR line. (Default = undefined.)
Periodic Reset Value: Determines how often the Reset String will be sent to
the modem at this port. (15 Minutes.)
Note: When communicating with the RSM-8R4 via modem, these parameters
will not be changed until after you exit command mode and disconnect.
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