51 / 74
FG_F6_MODBUS_EN_01 / 2020-06-17
Master
Slave
—
Answer to the request:
On network:
01
03
12
15
00
E8
03
00
00
01
00
F4
01
00
00
02
00
E8
03
00
00
9B
C2
01
Slave address
03
Function number (Read N*words)
12
Number of read bytes
15 00
Word 1: read 0015h (identifier n°21)
E8 03
Word 2 & 3: read 000003E8h
(value of test type = 1000(d)
→ Leak test
)
00 00
01 00
Word 4: read 0001h (identifier n°1)
F4 01
Word 5 & 6: read 000001F4h
(value of fill time = 500(d)
→
0.5 sec.)
00 00
02 00
Word 7: read 0002h (identifier n°2)
E8 03
Word 8 & 9: read 000003E8h
(value of stab. time = 1000(d)
→ 1 sec)
00 00
9B C2
CRC
•
Direct access
In Direct access, the master can only access to parameters one by one.
This is an example based on the reading of three parameters:
—
Test type
(D.A. address: 2015h)
—
Fill time
(D.A. address: 2001h)
—
Stabilization time
(D.A. address: 2002h)
Master
Slave
—
Put in edition the program number on which the
parameters have to be read
—
Make a
Read N*words
request of 2 words at the
2015h
address.
On network:
01
03
20
15
00
02
DE
0F
01
Slave address
03
Function number (Read N*words)
20 15
D.A. address
00 02
Number of words to read
DE 0F
CRC
—
Answer to the request:
On network:
01
03
04
E8
03
00
00
3F
93
01
Slave address
03
Function number (Read N*words)
04
Number of read bytes
E8 03
Word 1 & 2: read 000003E8h
(value of test type = 1000(d)
→ Leak test
)
00 00
3F 93
CRC
Содержание F6 Profinet Series
Страница 1: ...F6 Series Modbus RTU Manual ...
Страница 22: ...21 74 FG_F6_MODBUS_EN_01 2020 06 17 Modbus progress chart ...