11
COM_Setup:
Communication setup
Factory setting:
0
9600, 8E1
Supported values:
0
9600, 8E1
1
19200, 8E1
2
9600, 8N2
3
19200, 8N2
4
9600, 8N1
5
19200 8N1
7.4.
BROADCASTING
Broadcasting is not supported by the Lumiplus.
7.5.
WATCHDOG
The watchdog is a feature implemented in the Lumiplus aimed to check if the communications in the
bus keep alive. This is meanly a safety feature intended to detect a fail in the communications, and
allows changing to a predefined state.
The Watchdog is triggered when the device does not receive two messages in less than watchdog
time specified.
According to these descriptions, either the time considered for triggering the watchdog as well as how
to proceed then, needs to be defined.
If the watchdog has been activated, any request through Modbus will not be made. In this State, the
Lumiplus only can be read, and will not accept changes. The alarm of the watchdog in holding register
0x20 will be at 1; only setting this alarm to 0 through Modbus or switching OFF the power supply,
Lumiplus will allow changes or requests.
To allow correct errors if a bad configuration of the watchdog has been done, the first 30 seconds of
the Power ON of Lumiplus, the watchdog will be stopped. This allows the user to change the
watchdog time if a short time has been configured, or allows to deactivate the watchdog.
7.5.1.
WATCHDOG TRIGGERING
The watchdog triggering time is defined in the Holding Register 0x10. This time is set in seconds. 0s
means watchdog is disables. This is the default value.
To enable the watchdog feature, set the watchdog time to a value different from 0. However, mind
the implications of this value as long times may deal to useful setups.
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