C-Link Protocol Commands
Commands
B-2
Model 42
i
Trace Level Instruction Manual
Thermo Fisher Scientific
The analyzer must be in the remote mode in order to change instrument
parameters via remote. However, the command “set mode remote” can be
sent to the analyzer to put it in the remote mode. Report commands
(commands that don’t begin with “set”) can be issued either in the remote
or local mode. For information on changing modes, see Chapter 3,
“
Operation
”.
The commands can be sent in either uppercase or lowercase characters.
Each command must begin with the proper instrument identification
number (ASCII) character. The command in the example below begins
with the ASCII character code 170 decimal, which directs the command to
the Model 42
i
Trace Level, and is terminated by a carriage return “CR”
(ASCII character code 13 decimal).
<ASCII 170> T I M E <CR>
If an incorrect command is sent, a “bad command” message will be
received. The example below sends the incorrect command “set unit ppm”
instead of the correct command “set gas unit ppb.”
Send:
set
unit
ppb
Receive:
set unit ppb bad cmd
The “save” and “set save params” commands stores parameters in FLASH.
It is important that each time instrument parameters are changed, that this
command be sent. If changes are not saved, they will be lost in the event of
a power failure.
Streaming data is sent out the serial port or the Ethernet port on a user-
defined periodic basis. Streaming data over Ethernet is only generated when
a connection is made on TCP port 9881.
Table B–1
lists the 42
i
Trace Level C-Link protocol commands. The
interface will respond to the command strings outlined below.
Table B–1.
C-Link Protocol Commands
Command
Description
Page
addr dns
Reports/sets domain name server address for Ethernet port
B-38
addr gw
Reports/sets default gateway address for Ethernet port
B-38
addr ip
Reports/sets IP address for Ethernet port
B-38
addr nm
Reports/sets netmask address for Ethernet port
B-39
Commands
Accessing Streaming
Data
Commands List
