Communications Using Modbus/Tcp - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

1.7

Communications Using MODBUS/TCP

MODBUS/TCP is a protocol for using MODBUS protocol messages on a TCP/IP network.
The RJ71EN71 and RnENCPU (network part) support the MODBUS/TCP slave function so that they can communicate with
MODBUS/TCP master devices.
For communications using MODBUS/TCP, refer to the following.
 MELSEiQ-R MODBUS/TCP Reference Manual
(1)
Ethernet
(1) MODBUS/TCP master device
(2) RJ71EN71 or RnENCPU (network part)
• When this function is used on the RJ71EN71 or RnENCPU (network part), check the firmware version of the
module. ( Page 406 Added and Enhanced Functions)
• This function is not available when the network type is set to "Q Compatible Ethernet" for the RJ71EN71.
(2)
Request message
Response message
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1.7 Communications Using MODBUS/TCP
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