Alarm address (independently on the ”Virtual BUS” setting). As there is no alarm application supported in current
version of the module, it is recommended not to use this command.
As the WM868-MS-LP-H module with M-Bus interface of
”
Slave” type is always installed to the
main segment
of WACO Virtual Bus (together with bus control device -
”
Master”), the module is always the
”
master” of WACO
virtual bus. Therefore the module should be set as follows:
- the module is always assigned as
”
master” in setting of ”/f[+-]” parameter by [m] flag
- superordinate master’s address (”/m” command) is not set
3.5.5
Commands for setting of M-Bus interface
This group of commands is intended for setting of M-Bus data-bus interface parameters that is used for communi-
cation with data-bus master. There are following commands:
/b baud
setting of M-Bus data-bus bit speed (300 - 9600)
/p [n/e/o]
setting of data transfer parity (none,even,odd)
/s number
setting of stop-bit number (1 or 2)
/d number
setting of data-bit number (7 or 8)
/i timeout
setting of interbyte timeout in ms
/O timeout
setting of ”TX On timeout” - for WM868-MS-LP-H module not applied
/F timeout
setting of ”TX Off timeout” - for WM868-MS-LP-H module not applied
The
”/b [baud]”
command can be used for setting of
bit transfer speed
(
”
communication speed”) on the
serial/bus interface. The speed must be adjusted to the value, that is suitable for all devices on the bus. Setting
will be effective only after module restart. Example of setting of the communication speed to ”9600” baud value:
sysmon>/b 9600
IMPORTANT NOTE:
technically, it is possible to set data-bus transfer speed up to 115 200 baud value. How-
ever, according to the M-Bus specification the maximum transfer speed of M-Bus bus is 9600 baud and it is not
recommended to use higher speed than this.
The
”/p”
command can be used for setting of
parity bit
of the serial/bus interface. There are five options of
parity bit setting:
- value
”
n”
means
”
none parity” (none)
- value
”
e”
means
”
even parity” (even)
- value
”
o”
means
”
odd parity” (odd)
Example of setting of the parity bit to ”even”:
sysmon>/p e
The
”/d”
command can be used for setting of
number of data bits
of the serial/bus interface, where the number
”7” or ”8” can be used. Example of setting of the number of data bits to ”8” value:
sysmon>/d 8
The
”/s”
command can be used for setting of
number of stop-bits
of the serial/bus interface, where ”1” or ”2”
value can be used. Example of setting of the number of stop-bits to ”1” value:
sysmon>/s 1
The
”/i”
command can be used for setting of
interbyte timeout
of the serial/bus interface. Interbyte timeout is
set in milliseconds. Example of setting of interbyte timeout to ”10 milliseconds” value:
sysmon>/i 10
The module gradually (one-by-one) stores incoming Bytes from serial interface into radio-packets and (when the
packet is loaded) sends the packets through RF interface to other module. If there is a
”
silence” after last received
Byte longer than interbyte timeout, data sequence is considered as complete (no more data are expected) and radio-
packed is transmitted, even if it is not fully loaded.
Setting of all serial/bus interface parameters is stated in the list of all configuration parameters in following rows:
WM868-MS-LP-H
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