Multitech MMH900 User Manual page 65

communicate with one other channel. On multinode
networks, this command must be entered at both
channel locations specifying each other as
destinations (channels can pass through two nodes
to get to its destination). On point-to-point networks,
this parameter can be downline loaded.
DNxx Destination Node Number
This command is not necessary when a MultiMux
900 Series is connected to another MultiMux 900
Series. The destinatnion Node Number DNxx is
necessary when MMH904/MMH908 is connected to
a MultiMux16 or MultiMux32 model.
The DNxx command specifies the node number of
the destination node for output operations from a
local node. It specifies the destination node of the
channels to which the local source channels will
connect. For example, if some node in your network
is assigned 01 as its number (a node where its SN
command was SN01), you can communicate with
the 01 location channels by executing a DN01
command. At that point, your local channels will
communicate with those at node 01. The specific
channel connections will be determined by the
"virtual" channel number you have set up with the 8-
position DlP-Switch SW6, SW7, and SW8.
EO-1 Echo Command
The E0-E1 commands turn on and off the echoplex
feature of the MultiMux. When the echo condition is
on, the data entered on the channel keyboard is
returned to the channel display. The purpose of this
is so that in interactive operations an operator will
not experience undue delays in seeing data appear
on the monitor. When the echo condition is off, the
keyboard data is not returned to the monitor. E1
turns on echoplex and E0 turns it off.
F0-F2 Flow Control Operations
Flow Control is the means by which data flow is
controlled from the channel devices into the
MultiMux. Flow Control is necessary when the data
handling capacity of an individual channel cannot
Chapter 5 - Commands
65