Yokogawa JUXTA M Series Digital Limit Alarms MVTK - Manual (Page 28)

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<Toc> <Ind> <3. PC Link Communication >
IM 77J04J11-01E 1st Edition : 2006.08.25-00
WWR Writes data into D registers and I relays on a word-by-word basis
●
Function
Writes data into a sequence of contiguous registers on a word-by-word basis by the speci-
fied number of words, starting at a specified register number .
• The number of words to be written into at a time is 1 to 64.
• For the format of response in the event of failure, see subsection 3.1.2.
• The command shown below includes the checksum function.
When performing communication without checksum, do not include the 2-byte
checksum element in the command.-
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Command/Response (for normal operation)
Number of Bytes 1 2 2 1 3 5 1 2 1 4
Command
element
STX Address
number
(ADR)
CPU
number
01
0 WWR Comma
or space
Register
number
Comma
or space
Number
of words
(n)
dddd1
• • • Checksum ddddn ETX CR
• • • 4
dddd2
4 2 1 1
Number of Bytes 1 2 2 2 2 1 1
Response
element
STX Address
number
(ADR)
CPU
number
01
OK CR Checksum ETX
Write data is specified in a 4-digit character string (0000 to FFFF) in hexadecimal.
Command (continued)
ddddn: write data of the specified number of words
ddddn is a character string in hexadecimal.
n=1 to 64
●
Example:
Writing 200 (00C8 [HEX]) into the alarm-1 setpoint (D0101) of the M Series with address
number 03.
[Command]
[STX]03010WWRD0101,01,00C88E[ETX][CR]
OK is returned in response to the above command.
[Response]
[STX]0301OK5E[ETX][CR]