YOKOGAWA UTAdvanced Series, User Manual

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3-15
IM 05P07A01-01EN
Description of RS-485 Communication (for UT
Advanced with RS-485 Communication)
3

16 Writing to multiple D registers

Function
Data is written to D registers continuously for the specified number of registers from the
specified D register No.
• The maximum number of registers that can be written at a time is 50.
• For details on the response format at an error, see “ ● Response in an error state ” in
“3.1.3 Configuration of Responses (response from UTAdvanced).”
• When data outside the setting range of parameters is set, the response is a normal
response, but the data is not written.
• Broadcasting can be specified. No response is returned when broadcasting is
specified.

Message (during normal operation)
Element
Message start
mark (:)
Address No.
(ADR)
Function code
(0x10)
Register
start No.
Number of
registers
Byte count
(Note 1)
Number of bytes in RTU mode None 1 1 2 2 1
Number of bytes in ASCII
mode
1 2 2 4 4 2
Continuation of message
Write data • • • Write data Error check
Message
end mark
(CR+LF)
2 • • • 2 2 None
4 • • • 4 2 2
Note 1: Byte count = 2 x number of write registers

Response (during normal operation)
Element
Message
start mark
(:)
Address No.
(ADR)
Function code
(0x10)
Register
start No.
Number of
registers
Error
check
Message
end mark
(CR+LF)
Number of bytes in RTU
mode
None 1 1 2 2 2 None
Number of bytes in ASCII
mode
1 2 2 4 4 2 2
3.1 Modbus Communication