10 Industrial Ethernet Communication Adapter Modules (ECAM)
10.3 Profinet
134 PXR Electronic trip unit 01/21 MN012005EN www.eaton.com
10.3.1 Configuration of the Modbus parameters
In order
to
synchronize
the
communication between the breaker
Modbus
RTU
(slave device) and the ECAM (which acts as the Modbus RTU master
device), the slave ID (Modbus RTU slave), baud rate and parity bit settings of
both devices must be configured with the same values.
The ECAM’s Modbus RTU slave ID (which the master device addresses to),
baud rate and parity bit settings can be configured via API 0, indexes 0x1F4m
0x1F5 and 0x1F6.
Both, Modbus Slave (PXR-RCAM-MRTU-I) and Modbus Master (PXR-ECAM-
PNET) have the same default parameters. In case the Modbus RTU slave
parameters are not changed from the default values, the values of this
communication module do not need to be changed as well. The API 0,
indexes 0x1F4, 0x1F5 and 0x1F6, only provide the possibility to do so, if
desired by the user.
The stop bit is automatically set up and the value is 1.
The default settings of the Modbus Slave and Modbus Master are as follows:
Table 80: Profinet settings - Profinet
The valid parameter values will be applied instantly. Writing parameter values
outside valid ranges has no effect.
After a power-cycle, meaning the switch off the trip unit, the PXR-ECAM-
PNET does not save configured values but returns them to default values.
The Modbus communication parameters of the NZM breaker (Modbus RTU
slave) cannot be configured via Ethernet communication adapter module
(ECAM).
Setting value Index Number
[Hex]
Data range Default
value
Slave ID 0x1F4 1 - 247 2
Baud rate 0x1F5 00: 9,600 bit/s
01: 19,200 bit/s
02: 38,400 bit/s
03: 57,600 bit/s
01
Parity
0x1F6 00: none
01: odd
02: even
02
To Next Page
Loading...
