iSMA-B-MINI/MIX Modbus User Manual
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DMP262en | 1st Issue rev. 8 | 05/2022
page 37 of 107
Register Value
Type of Parity Bit
3
Always 1
4
Always 0
Table 13. Parity bit
6.15 Response Delay Time (40140)
The value of this 16-bit register determines the number of milliseconds to wait before the
unit answers the question. This time is used to extend the interval between the question
and answer. The default value of 0 means no delay (the answer is sent once during the
transmission of 3.5 character required by the protocol Modbus RTU).
6.16 Watchdog Time (40141)
This 16-bit register specifies the time (expressed in seconds) to watchdog reset. If the
module does not receive any valid message within that time, all digital and analog outputs
will be set to the default state.
This feature is useful in case of an interruption in data transmission, and if, for security
reasons, output states must be set to the appropriate state in order to avoid endangering
the safety of persons or the property.
The default value is 0 seconds, which means the watchdog function is disabled.
If the watchdog is triggered, the power LED blinks in the specified sequence (3 blinks with
20 Hz frequency and 1-second pause).