Digi PortServer II, Руководство пользователя

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Page 48 Installation 90030500B
Wiring Ports for Specific Devices
The table below summarizes the characteristics of and wiring requirements for the
device types available on PortServer II.
Detailed explanations of these functions are given below.
Note: Device types (dev=xxx) are set with the
set ports
command, as described
in the Function Reference Guide. Procedures are also given in later chapters
of this User’s Guide.
dev=host
(Computer or other devices)
Use this device type for connecting another computer to a serial port. A typical use
might be connecting a bulletin board system (BBS) to the Ethernet through the
PortServer II. DCD and DTR must be cross-connected between the PortServer II and
the BBS server.
When the server raises DTR to signal that it can receive calls, the PortServer II sees
DCD go high. It then allows incoming connections from the Ethernet through the
serial connection to the server. When an incoming connection is requested, PortServer
II raises DTR, and the server sees DCD go high, indicating there is a call. (This
sequence mimics a modem answering a dial-up call.)
Device
Type
DTR + RTS
when idle
Spawn Login
Remote Connect
allowed
Action when
DCD drops
term high data no ignore
prn low never yes ignore
host low never if DCD hang up
hdial low DCD + data no hang up
hio low DCD + data if DCD hang up
min high DCD raises no hang up
mout low never yes hang up
mio high DCD raises yes hang up