WEG CFW08 Vector inverter User Manual page 101

DETAILED PARAMETER DESCRIPTION
[Factory Setting]
Parameter
P312 (1)
Serial Interface [ 0 - WEG Protocol ]
P313
Serial Interface
Watchdog Action
P314
Serial Interface
Watchdog Timeout
100
Range
Unit Description / Notes
0...9
It sets the type of the protocol for the serial communication.
The serial interface can be configued for two distinct protocols:
1
WEG and Modbus-RTU.
The WEG protocol is described in Item 8.21 and is selected
by setting P312=0.
The Modbus-RTU protocol, described in item 8.22 has nine
predefined formats, as shown in table below:
If the inverter does not receive any valid message (via serial interface)
0...3
during the interval programmed at P314, the action set at P313 will
[ 2 ]
be performed and error E28 is shown on the display.
1
The different actions are:
- P313=0 : disables inverter via deceleration ramp;
- P313=1 : triggers the general disable command of the inverter;
- P313=2 : indicates only E28;
- P313=3 : changes the command reference to local mode.
If the communication is re-established, E28 switches off and the
inverter does not change its status.
0.0...99.9 Actuation interval of the Serial Watchdog. If the value of P314 is
[ 0.0 – Disable equal to 0, the Serial Watchdog function is disabled. Otherwise, if
Function] the the inverter does not receive any valid message during this
0 interval, it assumes the action that has been programmed at P313.
P312 Rate (bps) Parity
1 9600
2 9600
3 9600 Even
4 19200
5 19200
6 19200 Even
7 38400
8 38400
9 38400 Even
-
Odd
-
Odd
-
Odd