YOKOGAWA UTAdvanced Series, User Manual

Page: 88 / 866

4-11
IM 05P07A01-01EN
Description of Ethernet Communication (Modbus/TCP) (for UT
Advanced with Ethernet Communication)
4

66 Random reading

Function
The register data of register Nos. specified at random is read.
• Register Nos. can be specified from all register areas
• The maximum number of registers that can be set is 100.
• For details on the response format at an error, see “4.4.4 Response Error Codes.”

Request (during normal operation) Read n number of data
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2 1
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function
code
Number of
registers
Byte count
(Hex) Optional value 0000 2n+5 01 42 n 2n
Continuation of request
PDU
2 2
Specified
register No.1
• • • Specified
register No.n

Response (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 1 2 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function
code
Byte count Register
content 1
• • • Register
content n
(Hex) Optional value 0000 2n+3 01 42 2n

67 Random writing

Function
The register No. and data of register Nos. specified at random is written.
• Register Nos. can be specified from all register areas.
• The maximum number of registers that can be written at a time is 50.
• For details on the response format at an error, see “4.4.4 Response Error Codes.”

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 Number of
registers
Byte count
(Hex) Optional value 0000 4n+6 01 43 n 4n
Continuation of request
PDU
2 2 2 2
Specified
register No.1
Data 1 • • • Specified
register No.n
Data n

Response (during normal operation)
Element MBAP Header PDU
Number of bytes 2 2 2 1 1 2
Command
element
Transfer ID Protocol ID Number of
bytes
Unit ID Function code Number of
registers
(Hex) Optional value 0000 0004 01 43 n
4.4 Communication with Host Computer