MRV Communications LX-4000 Series Technical Information PDF herunterladen (Seite 654)

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APPENDIX N Semicolons Embedded

within Data Strings

The LX is ideal for making serial devices available for network

access and service. Devices such as modems may be required to

receive data strings to initiate dialout services. Some modems,

as well as other serial devices, may be required to receive

periodic serial data strings for synchronization purposes.

In many cases, a semicolon is required within this data string.

Normally, the LX command processor interprets the semicolon

as a command separator. Now the LX has a mechanism to pass

a datastream that includes the semicolon out a serial port. This

is accomplished several ways via the shell level “echo”

command.

Assuming a serial device is connected to LX port async 11, and

this device needs to receive a setup data string containing a

semicolon, here are some examples of how to accomplish this:

X To execute the shell echo command

1. At the LX shell, type:

Example

LX:/# echo -n “AT&F +CBST=7,0,1; SO=1”>/dev/ttyGN10

2. At the Superuser level of the CLI, enter:

Example

InReach:0>>

shell command echo -n “AT&F +CBST=7,0,1;

SO=1”>/dev/ttyGN10

3. At the Superuser level, call a script file by entering:

Example

InReach:0>>

script datatoport.script

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