GE 345 Communications Manual

1–176 345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
MODBUS FUNCTIONS CHAPTER 1: COMMUNICATIONS GUIDE
FUNCTION CODE: 1 byte (with MSbit set to 1)
EXCEPTION CODE: 1 byte
CRC: 2 bytes
The 345 implements the following exception response codes:
01 - ILLEGAL FUNCTION
The function code transmitted is not one of the functions
supported by the 345.
02 - ILLEGAL DATA ADDRESS
The address referenced in the data field transmitted by the
master is not an allowable address for the 345.
03 - ILLEGAL DATA VALUE
The value referenced in the data field transmitted by the
master is not within range for the selected data address.
Force coil commands
Modbus Address Hex Address Description
1 Reset
4 Open
5 Close
6 Display Message
7 Activate Group 1
8 Activate Group 2
11 Active Group
96 Clear Last Trip Data Prompt
99 Clear Trip Counters
100 Clear Event Records
101 Clear Waveform Data
102 Clear Maintenance Timer
104 Clear Temperature History
105 Clear Thermal Image
120 Trigger Waveform Capture
127 Start Uploading Setpoint File
128 End Uploading Setpoint File
4096 Force Virtual Input 1 State
4097 Force Virtual Input 2 State
4098 Force Virtual Input 3 State
4099 Force Virtual Input 4 State
4100 Force Virtual Input 5 State
4101 Force Virtual Input 6 State
4102 Force Virtual Input 7 State
4103 Force Virtual Input 8 State
4104 Force Virtual Input 9 State
4105 Force Virtual Input 10 State
4106 Force Virtual Input 11 State
4107 Force Virtual Input 12 State
4108 Force Virtual Input 13 State

GE 345 Specifications

General

Brand	GE
Model	345
Category	Relays
Language	English