ABB RELION REF610, Technical Reference Manual

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Table 5.1.15.1.-1 Supported application functions
Function code Function description
01 Read coil status
Reads the status of discrete outputs.
02 Read digital input status
Reads the status of discrete inputs.
03 Read holding registers
Reads the contents of output registers.
04 Read input registers
Reads the contents of input registers.
05 Force single coil
Sets the status of a discrete output.
06 Preset single register
Sets the value of a holding register.
08 Diagnostics
Checks the communication system between the
master and the slave.
15 Force multiple coils
Sets the status of multiple discrete outputs.
16 Preset multiple registers
Sets the value of multiple holding registers.
23 Read/write holding registers
Exchanges holding registers in one query.
Table 5.1.15.1.-2 Supported diagnostic subfunctions
Code Name Description
00 Return query data The data in the query data field is returned (looped back)
in the response. The entire response is to be identical to
the query.
01 Restart
communication
option The slave
’
s peripheral port is initialized and restarted
and the communication event counters are cleared.
Before this, a normal response will be sent provided that
the port is not in the listen only mode. However, if the
port is in the listen only mode, no response will be sent.
04 Force listen only
mode The slave is forced to enter the listen only mode for
Modbus communication.
10 Clear counters and
diagnostic register All counters and the diagnostic register are cleared.
11 Return bus
message count The number of messages in the communications system
detected by the slave since its last restart, clear counters
operation or power up is returned in the response.
12 Return bus
communication error
count The number of CRC errors encountered by the slave
since its last restart, clear counters operation or power
up is returned in the response.
13 Return bus
exception error
count The number of Modbus exception responses sent by the
slave since its last restart, clear counters operation or
power up is returned in the response.
14 Return slave
message count The number of messages addressed to the slave or
broadcast which the slave has processed since its last
restart, clear counters operation or power up is returned
in the response.
Feeder Protection Relay
Technical Reference Manual - ANSI Version
REF610 REF610
1MRS755535