Lufft CHM 15k Nimbus, Manual

Page: 28 / 101

Starting Up & Shutting Down
28 Revision R09, November 2016
For testing of communication, use a
set<SPACE><RS485No>:Transfermode=0<CR><LF>
command. It will switch to polling mode.
Working in this mode, you are able to test the following three types of telegram:
l
Standard data telegram
l
Extended data telegram
l
Raw data telegram
and make device settings as may be required. Chapter 8 describes available com-
mands and their effects in detail.
Table 3 shows the most important commands that are necessary to perform sim-
ple function tests in routine mode.
On completion of simple function testing: of the CHM 15k:
l
continue to operate the CHM 15k in polling mode or
l
set it back to automatic transfer mode
set<SPACE><RS485No>:Transfermode=1<CR><LF>
Note: This command refers to automatic transfer mode.
NOTE
Pay special attention to the baud rate setting for RS485 bus operation. If
you operate the system in raw data transfer mode, you should set the
baud rate at least 19,200 Baud for a short transmission time of telegrams.
Command Description
Reply
(shortened)
get<SPACE>16:L<CR><LF> Poll for extended data
telegram refer to chapter
8.3.4
set<SPACE>16:RNO=14<CR><LF> Changes RS485 number
from 16 to 14 set 16:RNO=14
set<SPACE>16:Baud=4<CR><LF> Sets baud rate to 19,200 set 16:Baud=4
set<SPACE>16:dt(s)=15<CR><LF> Sets logging time
to 15 seconds set 16:dt(s)=15
get<SPACE>16:Lifetime(h)<CR><LF> Queries laser operating
time in hours
get 16:Lifetime(h)
Table 3: Essential commands for function testing (examples)