YOKOGAWA UTAdvanced Series, User Manual

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4-7
IM 05P07A01-01EN
Description of Ethernet Communication (Modbus/TCP) (for UT
Advanced with Ethernet Communication)
4

05 Writing to an I relay

Function
Data is written to the specified I relay No.
• The number of relays that can be written at a time is 1.
• For details on the response format at an error, see “4.4.4 Response Error Codes.”
• The write data 0xFF00 and 0x0000 indicate ON (1) and OFF (0) respectively. When
data other than these is set, the response is a normal response, but the data is not
written.

Request (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function code I relay No. Write data
(Hex) Optional value 0000 0006 01 05

Response (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function code I relay No. Write data
(Hex) Optional value 0000 0006 01 05

06 Writing to a D register

Function
Data is written to the specified D register No.
• The number of registers that can be written at a time is 1.
• For details on the response format at an error, see “4.4.4 Response Error Codes.”
• When the data out of setting range of the parameter is set, the response is a normal
response, but the data is not written.

Request (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function code Register No. Write data
(Hex) Optional value 0000 0006 01 06

Response (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function code Register No. Write data
(Hex) Optional value 0000 0006 01 06
4.4 Communication with Host Computer