Programming examples mode 1
68
7.1 Requesting the operating messages of an RCMS470-12
A Modbus RTU Master is to query the operating messages of all 12 channels (BMS instruction
code 4) from an RCMS470-12 with BMS address 5.
The
Configuration register
must be written as follows:
In this example, the
Read register
provides the following information:
Word
Start address
Config.
register
BMS instruc-
tion code
High-Byte
BMS address
Low-Byte
Meaning
1
0406h
004h
005h
Setting the configuration register
Word
Start address
read register
BMS instruc-
tion code
High-Byte
BMS address
Low-Byte
Meaning
1
0006h
004h
005h
Repetition of configuration data:
instruction code 4, address 5
Address
read register
Data value per channel
Data type per channel
High-Byte Low-Byte
2
0007h
00h
00h
Channel 1
: data value 0 (00h) + data type 22
(16h), => no CT connected
3
0008h
00h
16h
4
0009h
00h
00h
Channel 2
: data value and data type like chan-
nel 1
5
000Ah
00h
16h
6
000Bh
00h
2Ah
Channel 3
:
data value 42 (2Ah) = measured value,
data value 55 (37h) = residual current in mA,
=> 42 mA residual current
7
000Ch
00h
37h
8
000Dh
00h
00h
Channel 4
: data value and data type like chan-
nel 1
9
000Eh
00h
16h
10
000Fh
00h
00h
Channel 5
: data value and data type like chan-
nel 1
11
0010h
00h
16h
12
0011h
00h
00h
Channel 6
: data value and data type like chan-
nel 1
13
0012h
00h
16h
14
0013h
00h
00h
Channel 7
: data value and data type like chan-
nel 1
15
0014h
00h
16h
16
0015h
00h
00h
Channel 8
: data value and data type like chan-
nel 1
17
0016h
00h
16h
18
0017h
00h
00h
Channel 9
: data value and data type like chan-
nel 1
19
0018h
00h
16h
20
0019h
00h
00h
Channel 10
: data value and data type like chan-
nel 1
21
001Ah
00h
16h
22
001Bh
00h
00h
Channel 11
: data value 0 + data type 1 (01h),
no operating message,
e.g. due to existing alarm message
23
001Ch
00h
01h
24
001Dh
00h
00h
Channel 12
: data value and data type like chan-
nel 1
25
001Eh
00h
16h
Содержание FTC470XMB
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