ProSoft Technology PLX8X-MNET-61850 - Manual (Page 155)

PLX8x-MNET-61850 ♦ Communication Gateway Reference
Modbus TCP/IP to IEC 61850 User Manual
ProSoft Technology, Inc. Page 155 of 228
May 14, 2014
IED Disconnect/Reconnect
If for any reason an IED disconnects from the network, the ProSoft gateway will
continually poll for the device and attempt to reconnect.
6.4.5 Control
Operate
Used by Direct control with normal security, SBO control with normal security,
Direct control with enhanced security, and SBO control with enhanced security to
write data to IED devices.
In the case where the logical node has (for example) Pos data that has SBOw,
Oper, and Cancel, the user needs to map the Oper structure only when wanting
to control that data. SBOw, Oper, and Cancel all refer to controlling the same
data attributes on the IED. The gateway automatically handles the select with
value. So although the SBOw and Cancel can be seen in the configuration
software, they should not be mapped. Only the Oper should be mapped. (The
Cancel structure should only be mapped if it is required.)
The IEC 61850 Oper Structure has Data Attributes as defined by the standard.
When you make MMS Writes from the Modbus device to the IED, if you do not
populate all data elements of Oper, the gateway will by default populate the other
data elements with 0 (zero). The exception to this is T which is always set to the
current time in the gateway.
The IEC-61850 Client driver needs to provide the following information to the
IED. These Data Attributes will be available for the user to select and set.