GE 345

CHAPTER 1: COMMUNICATIONS GUIDE RS485 INTERFACE
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 1–25
The “Command Operations ON and OFF” reuse the DNP Binary Outputs 43189, 43190,
…
103 general settings
If Comms Port is set to NONE, the IEC 870-5-103 communication protocol will not be
available.
If the user sets a value other than 0 in the Synchronization Timeout setting, when this time
expires without receiving a synchronization message, the Invalid bit will be set in the time
stamp of a time-tagged message.
It is necessary to configure other port settings: Baud Rate, etc.
Description Value
Virtual Input 1 0
Virtual Input 2 1
...
Virtual Input 32 31
Reset 32
Open 35
Close 36
Modbus Address Description Value Format
Command 1 Function Type <0 – 255 > F1
Command 1 Information Number < 0 – 255 > F1
Command 1 Operation ON 2 FC500
Command 1 Operation OFF 8 FC500
...
Command 16 Function Type <0 – 255 > F1
Command 16 Information Number < 0 – 255 > F1
Command 16 Operation ON 6 FC500
Command 16 Operation OFF 34 FC500
Number Value Range
Comms Port COM1 Enum[None,Com1]
Slave Address 1 [0..254]
Synchronization Timeout 30 min [0..1440]min