Modbus - GE RPV311 Technical Manual

Chapter 4 – Configuration
18

MODBUS

90
Stream of data
1
2
3
4
In Spontaneous mode the RPV sends the PMU data automatically up to 4 different
socket addresses (IP + port number). All 4 destination configuration can be set as
unicast or multicast transmission.
The parameters of the Communication screen are listed below:
<C > Sets the respective streams of data to Commanded mode. When set to
OMMANDED
Commanded mode. The RPV311 can send the HDR, CFG2 and CFG3 frames
according to the client's IED request.
<S > Sets the respective streams of data to Spontaneous mode. When in
PONTANEOUS
Spontaneous mode it is also possible to select which CFG frame the PMU will use. The
options are CFG2 and CFG3, at least one of them must be set. Additionally, it is
possible to choose if the HDR frame will be sent.
<U > Sets the addressing of the respective streams of data to Unicast mode.
NICAST
This kind of transmission connects to a single IP address and the routing of the
messages though the available Ethernet ports are managed by the RPV system. It is
important that the destination IP and the RPV311 share the same subnetwork
address.
<M > Sets the addressing of the respective streams of data to Multicast mode.
ULTICAST
This mode required the user to choose which Ethernet interface the RPV shall use to
convey the data.
Status, analog and digital data are available in MODBUS registers.
Access to SCADA integration is provided over the Ethernet interface. Up to 8
simultaneous connections are allowed a maximum rate of 60 accesses per second.
For further information about MODBUS, see Chapter 9: MODBUS.
Each register reports 16-bit data. Registers are divided into 3 groups:
0 Status
100 to 199 Analog data
200 to 223 Digital channels
Port number
4713
4714
4715
4716
Registers groups
RPV311
RPV311-TM-EN-7