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76
Manual – MOVI-PLC® advanced DHR41B for EtherNet/IP, Modbus/TCP and PROFINET IO
8
Parameter access via Modbus/TCP
The Modbus Protocol (Modbus/TCP)
8.4.3
Protocol structure
Or:
* The unit identifier (UI-D) is used in gateway operation to map registers 200
hex
203
hex
to the lower-level stations, see section 'Header'.
The description of the MOVILINK
®
parameter data (8 bytes) and their mapping to reg-
isters 200
hex
203
hex
is described in section 'MOVILINK
®
parameter channel'.
64067AXX
Byte-
Count
(0x8)
MOVILINK®
Parameter-Data
Write
Request:
Read
Request:
MBAP Header
Function Code-Data
FC
(0x10)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+6+8)
Write Address
(0x200)
Write Word
Count
(0x04)
Byte-
Count
(0x8)
MOVILINK®
Parameter-Data
FC
(0x03)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+6+8)
Write Address
(0x200)
Write Word
Count
(0x04)
Write
Response:
Read
Response:
FC
(0x10)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+5)
Write Address
(0x200)
Write Word
Count
(0)
FC
(0x03)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+5)
Read Address
(0x200)
Read Word
Count
(0x04)
64165AXX
Byte-
Count
(0x8)
Write/Read
Request:
Write/Read
Response:
FC
(0x17)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+10+8)
Read Address
Write Address
(0x200)
(0x200)
ReadWord
Count
(0x04)
Write Word
Count
(0x04)
Byte-
Count
(0x8)
MOVILINK®
Parameter-Data
FC
(0x17)
T- ID (0x00)
Prot-ID (0x00)
UI-D
(*)
Length
(1+6+8)
Read Address
(0x200)
ReadWord
Count
(0x04)
MOVILINK®
Parameter-Data
0
0
I
Содержание DHR41B
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