Monitoring Function (Timing / Watchdog) - BONFIGLIOLI Vectron Agile Communications Manual

Protocol
 11 VABus SST-Error-Register
If a transmission (enquiry or select telegram) is answered by the frequency inverter with NAK, the
VABus SST-Error-Register
error register
telegram is sent.
Error No.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
20
When the error register
Attention!
The frequency inverter will not accept a new select telegram until the error register has been read.
Enquiry telegrams will be accepted and answered.
7.4

Monitoring Function (Timing / Watchdog)

The 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 timeout time has expired.
After a frequency inverter has sent a telegram, a waiting time of 2 ms must be kept (t_pc_delay),
which the frequency inverter requires in order to switch off the RS485-Transmitter. The bus master
may not send a new telegram until this time has elapsed.
The frequency inverter replies 1 ms after receipt of a telegram (t_fu_delay) at the earliest. This means
that the bus master must have switched off its RS485-Transmitter after 1 ms at the latest.
06/2010
11 of the interface must be read out before a new select
VABus SST-Error-Register
Meaning
no error
inadmissible parameter value
inadmissible data set
parameter not readable (write-only)
parameter not writeable (read-only)
EEPROM read error
EEPROM write error
EEPROM checksum error
parameter cannot be written while the drive is running
values of the data sets differ from one another
wrong parameter type
unknown parameter
checksum error in received telegram
syntax error in received telegram
data type of parameter does not correspond to the number of bytes in the telegram
unknown error
Systembus client not reachable.
VABus SST-Error-Register
11
11 is read out, it is cleared at the same time.
VABus Agile 33