Bender FTC470XMB, Operating Manual

Page: 77 / 100

77 TGH1367en/06.2010
8. Programming examples mode 2
All the examples below include 5 Data Words. When programming, take into consideration
that the Modbus address of the FTC470XMB as well as the respective Modbus function 16
(write) and 3 (read) is to be put in front of the Data Words. The formats of the output and
input data are described on page 29.
8.1 Alarm messages
8.1.1 Number of alarm messages
The Modbus RTU-Master addresses BMS address 3, the EDS470-12 insulation fault evaluator,
requesting the current number of its alarm messages.
The Modbus RTU-Master sends an appropriate command to FTC470XMB
(function 16, output data):
The addressed EDS470-12 returns 4 alarm messages (function 3, input data):
The Modbus RTU-Master addresses BMS address 5, the insulation monitoring device
107TD47, requesting the current number of alarm messages:
The Modbus RTU-Master sends an appropriate command to FTC470XMB
(function 16, output data):
The addressed 107TD47 provides 3 stored alarm messages which had been released by
pressing the internal test button of the device (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 1 3 0 0 1 0 0 0
Word 1 Word 2 Word 3 Word 4 Word 5
0 1 3 0 0 1 0 1 4
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 2 5 0 0 1 0 0 0
Word 1 Word 2 Word 3 Word 4 Word 5
0 2 5 0 0 1 0 3 3