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4.1
"autoBaud Serial 1"
Function
Adapt the serial communication speed and parity of the GFW
modules to the connected supervision terminal or PLC.
Green LED L1 "STATUS" mentioned in the procedure can vary
its behavior based on parameter Ld.1, which is set to a default
value of 16.
Procedure
1 Connect the serial cables for all modules on the network to
serial 1 and to the supervision terminal.
2 Set the rotary switch on the GFW modules to be installed,or
on all modules present in case of first installation, toposition
"0+0".
3 Check that the green "STATUS" LEDs flash at highfrequency
(10Hz).
4 The supervision terminal must transmit a series of
generic"MODBUS" read messages to the network.
5 The procedure is over when all of the green L1 "STATUS"
6 LEDs on the GFW modules flash at a normal frequency (2Hz)
(if parameter 197 Ld.1 = 16 as default).
The new speed parameter is saved permanently in each GFW;
therefore, the "AUTOBAUD SERIAL 1" sequence does not have
to be run at subsequent power-ups.
When the rotary switch is turned, the green "STATUS"
LED stays on steadily for about 6 seconds, after which
it resumes normal operation and saves the address.
44
Sequence
INSTALLATION OF
SERIAL NETWORK 1
ModBus
?
YES
The serial network communication
speed is the same as for GFW.
NO
"AUTOBAUD" SERIAL 1
SEQUENCE
SETTING THE NODE
ADDRESS
OPERATIVE FUNCTION
80999D_MHW_GFW 400-600A_07-2020_ENG
Green "STATUS" LED
flashes at 10 Hz
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