12: M
ODBUS
ASCII/RTU C
OMMUNICATION
12-10
FC5A M
ICRO
S
MART
U
SER
’
S
M
ANUAL
FC9Y-B1268
Note:
The 16 bits in data register D8053 are assigned as shown below.
The 11-bit request number comprises high 8 bits and low 3 bits.
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
High 8 bits
Low 3 bits
Request No.
Low-order 5 bits
Error Code
Low 3 Bits
Request No. Range
000
1 to 255
001
256 to 511
010
512 to 767
011
768 to 1023
100
1024 to 1279
101
1280 to 1535
110
1536 to 1791
111
1792 to 2040
Example:
For request No. 256 and function error (01h), D8053 stores the following value.
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
High 8 bits
Low 3 bits
Request No.
Low-order 5 bits
Error Code
0 0 0 0 0
0
0
0
0
0 1 0 0 0 0 1
D8053
0021h
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