Bender FTC470XMB, Operating Manual

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Programming examples mode 2
79 TGH1367en/06.2010
The Modbus RTU Master interrogates BMS address 20, an EDS470-12 insulation fault evalu-
ator, for information about the alarm value of channel 5:
The Modbus RTU Master sends an appropriate command to FTC470XMB
(function 16, output data):
The EDS470-12 signals an alarm value of 11 mA to channel 5 (function 3, input data)
The Modbus RTU Master addresses BMS address 17, the residual current evaluator RCMS470-
12, for the alarm value of channel 12.
The Modbus RTU Master sends an appropriate command to FTC470XMB
(function 16, output data):
The RCMS470-12 signals a „fault current of 3 A“ (depending on the setting of residual cur-
rent/overcurrent/undercurrent) as alarm value (function 3, input data).
Word 1 Word 2 Word 3 Word 4 Word 5
H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte
always
„0“
Consecutive
Modbus ID
No.
BMS address of
the addressed
device
BMS
channel
No.
always
„0“
BMS
com-
mand
always
„0“
BMS
data
type
BMS data value
0 5 20 5 0 2 0 0 0
Word 1 Word 2 Word 3 Word 4 Word 5
0 5 20 5 0 2 0 51 11
Word 1 Word 2 Word 3 Word 4 Word 5
H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte H-Byte L-Byte
always
„0“
Consecutive
Modbus ID
No.
BMS address of
the addressed
device
BMS
channel
No.
always
„0“
BMS
com-
mand
always
„0“
BMS
data
type
BMS data value
0 6 17 12 0 2 0 0 0
Word 1 Word 2 Word 3 Word 4 Word 5
0 6 17 12 0 2 0 56 3