YOKOGAWA UTAdvanced Series, User Manual

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3-19
IM 05P07A01-01EN
Description of RS-485 Communication (for UT
Advanced with RS-485 Communication)
3

70 Writing to multiple D registers for program pattern

Function
Data is written to D registers continuously for the specified number of registers from the
specified D register No.
Can be specified register areas: D8001 to D9000.
• The maximum number of registers that can be written at a time is 80.
• 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.

Message (during normal operation)
Element
Message start
mark (:)
Address No.
(ADR)
Function code
(0x46)
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
(0x46)
Error code
(Note 1)
Error
check
Message
end mark
(CR+LF)
Number of bytes in RTU
mode
None 1 1 1 2 None
Number of bytes in ASCII
mode
1 2 2 2 2 2
Note 1: See the "Error Information" of "6.4.10 Program Pattern for UP55A (D8001 to D9000)" or
"8.4.8 Program Pattern for UP35A (D8001 to D9000)" in this manual.
► Writing via Communication:
6.4.10 Program pattern for UP55A (D8001 to D9000) or 8.4.8 Program pattern for UP35A (D8000
to D9000) in this manual
3.1 Modbus Communication