REVO C
2PH from 1100A to 2100A
User’s manual
71
13.2 Using Serial Port RS485 only
The static unit has an RS485 Modbus RTU serial port always present.
By setting the Digital Input as “Not Used” or different from “Enable” it is possible to control the enable from
serial port with bit 2 of parameter 14
If bit 2 = 1: Enabled
If bit 2 = 0: Disabled
13.3 Using Digital Input + Serial Port RS485
The static unit has the serial port as standard RS485 Modbus RTU always present.
The external contact Sw
H
and the internal software contact Sw
S
are connected in series, therefore if you want
to enable the static unit, both contacts must be enabled.
Each variation of the Sw
H
contact connected on the digital Input (DI) is shown on the internal Sw
S
contact,
allowing correct operation.
Using the serial port it is possible to change the status of the Sw
S
contact with bit 2 of parameter 14, bearing in
mind that it will be overwritten when the digital input is subsequently changed.
This configuration is useful for having an external contact for a safety or emergency alternative to the serial
command.
Sw
S
= Switch software
Sw
s
DI
Software switch
from communication
DI Function Configurated like “Not Used” or different from “Enable”
Instrument Enable
Sw
H
= Switch hardware
Sw
S
= Switch software
Sw
H
DI
Sw
S
DI Configurated like “Enable” function
External
Contact
Instrument Enable
Software switch
from communication
Summary of Contents for REVO C EXTENDED 2PH
Page 2: ......
