Yokogawa JUXTA VJ Series Limit Alarms Manual de usuario descargar pdf (Pagina 26)

3-12

IM 77J01J11-01E

3.2.8 WRS Specifying D Registers/I Relays to be Monitored on a

Word-by-word Basis

● Function

Specifies the numbers of registers to be monitored on a word-by-word basis. Note that this

command simply specifies registers. Actual monitoring is performed by the WRM com-

mand after the register numbers are specified.

When the volume of data is large and you wish to increase the communication rate, it is

effective to use a combination of the WRS and WRM commands rather than just the WRR

command.

When the power is turned OFF, the register numbers specified will be erased.

• The number of words to be specified at a time is 1 to 32.

• 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 a checksum, do not include the 2-byte checksum command

element in the command.

● Command/Response (for normal operation)

Number of Bytes 12 213 2 5 1 5 1

CPU

number

Command (continued)

5211

• • •

Command

Element

STX Address

number

(ADDRESS)

Number

of words

(n)

number 1

Comma

or space

number 2

Comma

or space

0 WRS

number n

ETX CR• • • Checksum

12 222 11Number of Bytes

ETX CRResponse

Element

STX Address

number

(ADDRESS)

CPU

number

OK Checksum

030221E.EPS

● Example:

Specifying the input value (%) and output value (%) of the VJ Series signal conditioner with

communication address-1 are to be monitored

The following command specifies that the input value (

D0004) and output value (D0008) at

communication address-1 are to be monitored.

(This command simply specifies the registers to be monitored.)

[Command]

[STX]01010WRS02D0004,D000890[ETX][CR]

CPU number: 01 D register numbers

030222E.EPS

OK is returned as a response to the above command.

[Response]

[STX]0101OK5C[ETX][CR]

3rd Edition : Oct. 15, 2007-00

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