YOKOGAWA UTAdvanced Series, User Manual

Page: 61 / 866

3-30
IM 05P07A01-01EN

WRD Reading D registers and I relays on a word-by-word basis

Function
Reads a sequence of contiguous register information on a word-by-word basis by the
specified number of words, starting at the specified register number.
• The number of words to be read at a time is 1 to 64 (decimal).
• For details on the response format at an error, see “3.2.3 Configuration of Response.”
• The command/response shown below includes the checksum function. When
performing communication without the checksum, do not include the 2-byte checksum
element in the command.

Command/Response (during normal operation)
Number of
bytes
1 2 2 1 3 5 1 2 2 1 1
Command
element
STX Address
No.
(ADR)
CPU
No. (01)
Response
waiting
time
WRD Register No. , or
space
Number
of words
(n)
Checksum ETX CR
Number of
bytes
1 2 2 2 4 4 • • • 4 2 1 1
Response
element
STX Address
No.
(ADR)
CPU
No. (01)
OK dddd1 dddd2 • • • ddddn Checksum ETX CR
Responses are returned as a 4-digit character string in Hex (0000 to FFFF).
ddddn: Read data of specified number of words
ddddn is a Hex character string. (n = 1 to 64)

WWR Writing data into D registers and I relays on a word-by-word basis.

Function
Writes information into a sequence of contiguous registers on a word-by-word basis by
the specified number of words, starting at the specified register number.
• The number of words to be written at a time is 1 to 64 (decimal).
• For details on the response format at an error, see “3.2.3 Configuration of Response.”
• The command/response shown below includes the checksum function. When
performing communication without the checksum, do not include the 2-byte checksum
element in the command.

Command/Response (during normal operation)
Number of
bytes
1 2 2 1 3 5 1 2 1 4
Command
element
STX Address
No.
(ADR)
CPU
No. (01)
Response
waiting
time
WWR Register No. , or
space
Number
of words
(n)
, or
space
dddd1
Continuation of command
4 • • • 4 2 1 1
dddd2 • • • ddddn Checksum ETX CR
Write information is specified as a 4-digit character string in Hex (0000 to FFFF).
ddddn: Write data of specified number of words
ddddn is a Hex character string (n = 1 to 64)
Number of
bytes
1 2 2 2 2 1 1
Response
element
STX Address
No.
(ADR)
CPU
No. (01)
OK
Checksum ETX CR
3.2 PC Link Communication