hager HR551 - Variables of the Trip Unit for a Test or Communication

RS-485 communication
Modbus® commands
Possible status of HR72x
Value Description
3 HR72x tripped by TEST with an error test result
4 HR72x tripped by TEST with a successful test result
5 HR72x was tripped due to communication
6 HR72x tripped by TRIP input
Table 18: Status of HR72x
Function 0x02
Parameter Format Address Value
Internal error detected in the HR72x bool 0000
0: Not detected
1: Detected
Pre-alarm activated bool 0001
0: Deactivated
1: Activated
Channel tripped bool 0002
Channel tripped due to discharge current bool 0003
Channel was tripped by an error in the HR72x bool 0004
Channel is tripped by a test bool 0005
Channel tripped due to TRIP input bool 0006
Tripped channel due to communication bool 0007
0: Not tripped
1: Tripped
HR72x not connected bool 0008
Error when writing to the HR72x bool 0009
HR72x does not respond to requests bool 000A
0: Not detected
1: Detected
Table 19: Modbus memory mapping: Channel status
9.3.3 Variables of the trip unit for a test or communication
Functions 0x01 and 0x05
Configuration variables Format Address Valid data range Standard value
Trip due to TEST of the channel bool 07D0
FF00: Initiate test of the channel
0000: End TEST
0000
Trip due to communication of the channel bool 07D1
FF00: Channel trip
0000: Channel reset
0000
Table 20: Modbus memory mapping: Configuration of the trip and the pre-alarm
Fehlerstromschutz-Relais 41