SEW-Eurodrive MOVIPRO Ethernet/IP - Page 98

8
Configuration and startup of Modbus/TCP
Project planning examples
Manual – MOVIPRO
®
with EtherNet/IP™ or Modbus/TCP Fieldbus Interface
98
Response telegram
The following data bytes are returned in the response telegram of the Modbus/TCP
slave:
Byte Value Meaning Interpretation Help
0
0x00 Transaction identifier
–
For detailed description see
Modbus/TCP specification
and chapter "Modbus
protocol (Modbus/
TCP)"(→2101).
1
2
0x00 Protocol identifier
3
4 0x00
Length field
Number of bytes after byte 5
Value: Number of PD × 2 + 3
(In this case: 3 × 2 + 3 = 9)
5 0x09
6 0xFF Device identifier Must be 0 or 255.
7 0x17 Function code
Service: FC23 (read and write re-
gister)
8 0x06 Write byte count
Number PD× 2
1)
(In this case: 3 x 2= 6)
9 0x00
Data Process input data word 1
Data mapping and definition,
see chapter "Process data
description"(→2118)
10 0xAA
11 0xBB
Data Process input data word 2
12 0xCC
13 0xDD
Data Process input data word 3
14 0xEE
1) for MOVIPRO® SDC (2–16) for MOVIPRO® ADC (2–240)
16998413/EN – 12/2016