SFA-5000 • SFA-10000 DeviceNet
6.4.3 Explicit Messages Connection
These messages are meant to open and close P2P connections between Master
and Slave. This is necessary to allow the Slave both to communicate process
data using “I/O Messages” and communicate or change parameters using “Data
transfer” messages.
Open connection request:
Byte
bit7
bit6 bit5 bit4 bit3 bit2 bit1
bit0
0
F=0
0
Master MAC-ID
1
R/R=0
Service Code = 4Bh
2
Class ID = 03h
3
Instance ID = 01h
4
Allocation Choice
*
5
Master MAC-ID
Open connection response:
Byte
bit7
bit6 bit5 bit4 bit3 bit2 bit1
bit0
0
F=0
0
Master MAC-ID
1
R/R=1
Service Code = 4Bh
2
General error code
Close connection request:
Byte
bit7
bit6 bit5 bit4 bit3 bit2 bit1
bit0
0
F=0
0
Master MAC-ID
1
R/R=0
Service Code = 4Ch
2
Class ID = 03h
3
Instance ID = 01h
4
Release choice = Allocation Choice
*
Close connection response:
Byte
bit7
bit6 bit5 bit4 bit3 bit2 bit1
bit0
0
F=0
0
Master MAC-ID
1
R/R=1
Service Code = 4Ch
2
General error code
*
Allocation choice:
bit 7
Reserved
bit 3
Multi polled
bit 6
Ack suppression
bit 2
Bit strobe
bit 5
Cyclic
bit 1
Polled
bit 4
Change of status
bit 0
Explicit message
EXAMPLE
Allocation choice =
01h: used to read and write configuration parameters without “I/O Messages”.
03h: activate
communication.
communication without ACK.
MAN SFA_5000_10000_FD E 1.0.odt
DeviceNet interface
55 of 88
Содержание SFA-10000-FD
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