Delta D25886 User Manual Page 289

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Appendix B
DVP-MC operating manual B-3
Explanation of Ethernet parameters setting:
name Equipment name which users could name by themselves.
IP Address The IP address of DVP10MC11T
IP Configuration
There are Static and DHCP selections for DVP10MC11T Ethernet. If DHCP
(dynamic) is selected, the Ethernet parameters are obtained by DVP10MC11T itself;
if Static is selected, the parameters will be set by user.
Netmask Subnet mask of DVP10MC11T
Getway Gateway address of DVP10MC11T
Modbus TCP Communication:
1. Modbus TCP message structure:
Data order Name Explanation
Byte0 High byte
Byte1
Transaction identifier
Low byte
0
Byte2 High byte
Byte3
Protocol identifier
Low byte
0
Byte4 High byte
Byte5
Modbus data length
Low byte
The number of bytes for
Modbus address and the
data after it
Byte6 Modbus ID Single byte 00xFF
Byte7 Function code Single byte
Byte8 High byte
Byte9
Device address in DVP10MC11T
Low byte
0~0xFFFF
Byte10 High byte
Byte11
Modbus data
Low byte
The byte number of Modbus
data is determined by
function code.
2. Modbus function code DVP10MC11T supports:
Function code Function Device
0x02
Read bit-device register value; maximum 256 bits of data could be
read once.
M,I,Q
0x03
Read one single or multi word-device register value; maximum 64
words of data could be read once.
D
0x05
Write one single bit-device register value.
M ,Q
0x06
Write one single word-device register value
D
0x0F
Write multi bit-device register value; maximum 256 bits of data could
be written once.
M,Q
0x10
Write multi word-device register value; maximum 64 words of data
could be written.
D
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