ABB REF 54 Series Technical Reference Manual, General page 73

1MRS750527-MUM Feeder Terminal
Technical Reference Manual, General
Parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Collision counter 0...65535
Frame error counter 0...65535
Parity error counter 0...65535
Overrun error counter 0...65535
1) When using communication speeds below 1200 bits/s, be sure to set the values for parameters to
values above the time it takes for one character to be sent. Note that if the values are not correctly
set, the sent messages will be lost.
2) If parameter F503V024, Unsolicited reporting mode, is set to "0", REF 54_ responds to an Enable
Unsolicited Reporting request with the Internal indication IIN2.0 (Function Code Not Supported) bit
set.
3) See the manual DNP 3.0 Remote Communication Protocol for REF 54_ and RET 54_.
Modbus
The Modbus protocol has two serial transmission modes: ASCII and RTU. These
modes define the bit contents of the message fields transmitted in the network.
Adjustable Modbus serial communication parameters are shown in the table below.
Parameter
Unit address 1...247
CRC order 0/1
[0=LO/HI, 1=HI/LO]
Protocol mode 0/1
[0=ASCII, 1=RTU]
Password ASCII codes
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
Protocol mapping
diagnostic parameter
of NOB entries
Protocol mapping
diagnostic parameter
Baud rate 1) 2)
0...6
[0=300
1=600
2=1200
3=2400
4=4800
5=9600
6=19200]
Value Default
0
0
0
0
Value Default
1
0
1
4 space
characters
0
0
0
0
0
0
0
6
REF 54_
Explanation
Number of entries referring to invalid
objects from existing block (NOB)
Number of entries translated into
protocol mapping
Protocol mapping name
3)
Collision detection
Explanation
Address of the REF 54_ in the Modbus
network. Must be same as configured
in the master station.
The order of CRC bytes in protocol
frame. Not used in ASCII mode
Chooses whether the REF 54_ uses
ASCII or RTU mode.
Password for control operations
Total entries counter
Number of entries not in use
Number of entries with invalid,
uncorrectable contents (INV)
Number of entries with corrected
contents (COR)
Number of entries referring to
nonexistent block (NBL)
Number of entries referring to invalid
objects from existing block (NOB)
Number of entries translated to
operational protocol mapping
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