Monitoring Timing Function; Watchdog - BONFIGLIOLI Vectron ACTIVE Manual

6.8 Monitoring Timing Function

The Modbus protocol defines a pure Master/Slave operation. If a frequency inverter
is addressed by the bus master, other frequency inverters will only be addressed
after the protocol with the first frequency inverter has been completed or the Time-
out time has expired.
After a frequency inverter has sent a message, a waiting time of 2 ms must be kept.
This time is needed by the frequency inverter in order to switch off the RS485
transmitter. The bus master may not send a new message before this time has
elapsed.
The frequency inverter replies 10 ms after receipt of a message, at the earliest. This
means that the bus master must have switched off its RS485 transmitter after 10
ms, at the latest.
If the bus master does not receive an answer from the frequency inverter within
500 ms, it can start a new transmission to any frequency inverter.
Attention! If the degree of utilization of the CPU is high (> 90%), the response
Note:

6.9 Watchdog

If the frequency inverter is operated via the serial interface (RS232, RS485), it may
be important to monitor the presence of the communication line. For example it may
be that the frequency inverter is switched on/off in Remote Mode, or it only receives
its reference value cyclically via the serial interface. If the communication fails, no or
faulty data are transmitted. This is recognized by the communication watchdog.
The watchdog function monitors the time in which no correct communication takes
place. This time can be adjusted via parameter
The adjusted value is the time in seconds (0...10000 seconds) within which at least
one correct exchange of data must have occurred.
If the adjusted monitoring time has elapsed, the frequency inverter signals a fault.
The fault message F2010 Watchdog RS232/RS485 is displayed.
Note:
05/08
05/08
time can be more than 500 ms.
The specified times are valid for operation with RS485 and RS232.
Parameter
No. Name/Meaning
413 RS232/RS485 Watchdog Timer [sec]
If parameter
the monitoring function is deactivated.
Modbus Instruction manual
Modbus Instruction manual
RS232/RS485 Watchdog Timer
Min.
0
RS232/RS485 Watchdog Timer
413.
Settings
Max. fact. sett.
10000 0
413 is set to 0 (default),
35
35