N-Tron ESERV-11T User Manual
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Contents
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Server Properties ESERV-1xT Serial Servers24 ESERV-1xT (Rev. 1210)SERIAL INTERFACE MODESFour serial interface modes of operation are:RS-232 - Point-to-point serial communications connection used by PC COM ports and many other systems.Capable of baud rates up to 115.2 kbaud over short distances (typically 50 feet). Typically uses DB-9connectors but terminals are also used on ESERV-1xT serial servers.RS-422 - Point-to-point communications using a transmit pair and a receive pair. RS-422 can operate at higherspeeds and longer distances than RS-232. Typically uses two shielded twisted pairs and screw terminals butDB-9 connectors are also used on ESERV-1xT serial servers.RS-485 2-wire - Similar speed and distance specifications as RS-422 but allows multi-drop connections.Typically uses one shielded twisted pair and screw terminals but DB-9 connectors are also used on ESERV-1xTserial servers.RS-485 4-wire - Similar speed and distance specifications as RS-422 but allows full-duplex connections.Typically uses two shielded twisted pairs and screw terminals but DB-9 connectors are also used on ESERV-1xT serial servers..Select the appropriate serial interface mode for the type of connection between the serial server's serial port and thedevice connected to it.Note: Refer to the Appendix D for connector and pin-out details.SERIAL SERVER NAMESerial Server Name is a unique name assigned to the serial server. It must be a valid hostname as defined by RFC-952 and RFC-1123. The rules are:It must consist only of the characters "A" to "Z", "a" to "z", "0" to "9" or "-"It can start or end with a letter or a number, but it must not start or end with a "-".It must not consist of all numeric values.SERVER SERIAL PORT NUMBERThe Server Serial Port Number of the currently selected port is shown in this field.ESERV-11T serial servers feature one serial port.ESERV-12T serial servers feature two serial ports.Serial WatchdogSerial Watchdog controls the duration of serial inactivity when the serial port is determined idle and causes allconnections for that serial port to be forced closed. The range is 1 through 65535 milliseconds.SUBNET MASKThe Subnet Mask specifies the network mask the serial server uses when on a subnetted network.For a Class A network (IP addresses 0.0.0.0 through 127.255.255.255) the default subnet mask is 255.0.0.0.For a Class B network (IP addresses 128.0.0.0 through 191.255.255.255) the default subnet mask is 255.255.0.0For a Class C network (IP addresses 192.0.0.0 through 233.255.255.255) the default subnet mask is255.255.255.0 |
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