Programming examples mode 2
78
8.1.2
Alarm messages or information via channel number
The Modbus RTU Master interrogates BMS address 5, the 107TD47 insulation monitoring de-
vice, for information about the overtemperature (alarm message). This message is available
at channel 3 of the 107TD47.
The Modbus RTU Master sends an appropriate command to FTC470XMB
(function 16, output data):
The addressed 107TD47 signals overtemperature of the monitored isolating transformer
(function 3, input data)
:
The Modbus RTU Master interrogates BMS address 10, a PRC487 control device, for informa-
tion about the state of Line 1 (alarm message). This information is available at channel 1 of
PRC487.
The Modbus RTU Master sends an appropriate command to FTC470XMB
(function 16, output data):
The addressed PRC487 signals failure of Line 1 (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
3
5
3
0
2
0
0
0
Word 1
Word 2
Word 3
Word 4
Word 5
0
3
5
3
0
2
0
11
3
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
4
10
1
0
2
0
0
0
Word 1
Word 2
Word 3
Word 4
Word 5
0
4
10
1
0
2
0
11
4
Содержание FTC470XMB
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