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Operating Manual CHM 8k
R1.7 / 01-2020
Communication via RS485 & Ethernet 32
The logging and reporting time are set to 30 seconds. The internal measuring time is always set to one
second. The login and reporting time must be a multiple of one second.
The command
set<SPACE><RS485Number>:DateTime=DD.MM.YYYY;hh:mm:ss<CR><LF>
is used to change the date and time of the embedded system. Here, DD = day, MM = month and YYYY
= year, hh = hour, mm = minute and ss = second according to time zone GMT (Greenwich Mean Time).
Example with RS485Number = 16:
set 16:DateTime=13.04.2006;17:22:46<CR><LF>
sets the date to 13.04.2006 and the time to 17:22:46 GMT.
8.3 Data query RS485
When running, the
CHM 8k operates in one of the transfer modes shown in Table 7.
Transfer mode Description
0 Data telegrams are only output on a specific request (polling mode)
1 Automatic output of the standard data telegram
2 Automatic output of the extended data telegram
3 Automatic output of the raw data telegram
4 … 9
Automatic output of further predefined data telegrams
Table 7 Summary of transfer modes.
The transfer mode can be changed with the Set command
Set<SPACE> <RS485Number>:TMO=<Transfermode>
as described in section 8.2.2 Setting a parameter or via direct input in the web interface.
Thus, with the command
set<SPACE>16:TransferMode=1<CR><LF>
the automatic output of the standard data telegram is activated for the device with RS485 number 16
(default setting valid at the time of delivery).
8.3.1 Polling mode
The command
set<SPACE><RS485Number>:TransferMode=0<CR><LF>
sets the polling mode and thereby any previously running automatic telegram output is issued. With the
three commands
get<SPACE><RS485Number>:S<CR><LF>
get<SPACE><RS485Number>:L<CR><LF>
get<SPACE><RS485Number>:A<CR><LF>