Westermo IDW-90 - Manual (Page 10)

10 6620-2200
5. Execute AT-Command string
Execute a pre-programmable AT command string stored in the table of entries.
This can for example be used for switching DTE communication parameters for
online an offline mode by using two entries.
6. Transparent I/O
When the input is triggered, the modem will establish a connection to the stored
number of an remote unit and send out a command, after a connection is established,
the I/O is bi-directional.
To accept any remote generic I/O on a modem the “Remote I/O Enable” DIP switch
must be set “ON”
Digital Output
The digital output gives the following functionality:
1. Output Contact
The modem has an change over relay output (SPDT-contact). The output can be
controlled by a remote modem through Transparent I/O and Output service in the
Generic I/O function. The output can also be programmed to follow the local DCD or
DTR signals.
2. Remote controlled
The output can be programmed to follow a remote modem data input. A remote unit
can also set/reset the output as well as transferring a sequence of set- and resets of
the output.
3. Follow DCD/Network
The output can be programmable to follow the local DCD or DTR signal.
Digital Input
The digital input gives the following functionality:
1. Static input
A static digital level trigged input high or low triggers the Generic I/O. With a level
trigged input only the first entry in the Generic I/O list can be trigged by the I/O input.
The input is trigged when
the selected level has been
stable for ta ms.
A new trig will not occur
until the input has return
to the opposite state an
back again.
= t
a
High level trigged input timing
≥t
a
Trig Trig
= t
a
Low level trigged input timing
≥t
a
Trig No trig due to low
level shorter than t
a
= t
a
<t
a