Delta DVP-FEN01, Operation Manual

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C h a p t e r 4 C o n t r o l R e g i s t e r s
4.4 Introduction of ETHRW
DVP-FEN01 supports the instruction ETHRW. It can send a Modbus TCP command to a device to which an IP
address is assigned by means of the instruction.
Instruction name: ETHRW (Only the 16-bit instruction is supported.)
Format: ETHRW S
1
S
2
D n (The 32-bit instruction and the pulse instruction are not supported.)
Descriptions of the operands:
S
1
: IP address, communication port number, and read/write mode

IP address: Two consecutive word devices are occupied, that is S
1
+0 and S
1
+1 are occupied.
IP address

IP3.IP2.IP1.IP0

192.168.1.6
If S
1
is D0, the value in D0 is H’0106, and the value in D1 is H’C0A8.
D100 D101
High Low High Low
IP1 IP0 IP3 IP2
1 6 192 168
H’0106 H’C0A8

Communication port number: The number assigned to DVP-FEN01 is K108. It occupies S
1
+2 (D2).

Station address: The station address of a slave occupies S
1
+3 (D3).

Read/Write mode: The definition of a read/write mode is the same as that of Modbus. The function codes
supported are H’03, H’04, H’06, and H’10. The device occupied is
S
1
+4 (D4).
S
2
: It is the communication address of the device which is read/to which data is written. The definition of an
address is the same as that of Modbus.
D : Source data register number or destination data register number (data register number stored in a PLC)
n : Data length: A word is a unit. n is in the range of K1 to K96. If n is not in the range, it will be counted as the
maximum value or the minimum value.
Please refer to a DVP-EH3 manual for more information about flags and points for attention.
Models supported
: DVP-EH3 (DVP-EH3-L) version 1.20/DVP-SV2 version 1.00/DVP-SE version
1.00/DVP-SA2 version 2.40/DVP-SX2 version 2.40
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