C-Link Protocol Commands
Commands
Thermo Fisher Scientific
Model 15
i
Instruction Manual
B-3
Table B–1.
Error Response Messages
Command Response
Description
bad cmd
Command is not recognized
too high
Supplied value is higher than the upper limit
too low
Supplied value is lower than the lower limit
invalid string
Supplied string invalid (typically because a letter was detected
when the value should be numeric)
data not valid
Supplied value is not acceptable for entered command
can’t, wrong settings
Command not allowed for current measurement mode
can’t, mode is service
Command not allowed while instrument is in service mode
feature not enabled
I/O expansion board is not detected
flags no alarm active
No measurement alarms are active
The “save” and “set save params” commands (duplicated for backward
compatibility) store parameters in FLASH memory. It is important that
this command be sent each time instrument parameters are changed. If
changes are not saved, they will be lost in the event of a power failure.
When interfacing to an instrument via C-link commands, always enter the
concentration values in ppb or μg/m
3
units. For example, to set a
background value to 20 ppm, enter 20000 (ppb) as the value for the set
background command.
Table B–2
lists the 15
i
C-Link protocol commands. The interface will
respond to the command strings outlined below.
Table B–2.
C-Link Protocol Commands
Command
Description
Page
addr dns
Reports/sets domain name server address for Ethernet port
B-34
addr gw
Reports/sets default gateway address for Ethernet port
B-34
addr ip
Reports/sets IP address for Ethernet port
B-35
addr nm
Reports/sets netmask address for Ethernet port
B-35
addr ntp
Reports/sets IP address for network time protocol server
B-35
agc int
Reports current AGC intensity
B-16
alarm agc intensity
max
Reports/sets AGC intensity alarm maximum value
B-12
Entering Units in
PPB
Commands List
