Yokogawa JUXTA VJ Series Limit Alarms Bedienungsanleitung PDF herunterladen (Seite 20)

3-6

IM 77J01J11-01E

3.2.2 BRD Reading I Relays on a Bit-by-bit Basis

● Function

Reads a sequence of contiguous ON/OFF statuses by the specified number of bits starting

at a specified I relay number.

• The number of bits to be read at a time is 1 to 256.

• 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)

Command

Element

STX Address

number

(ADDRESS)

CPU

number

0 BRD ETX CRI relay

number

Comma

or space

Number

of bits

(n)

Checksum

OK d1 d2 d3 ETX CRResponse

Element

STX Address

number

(ADDRESS)

CPU

number

• • • dn Checksum

The response is “0” when the status is OFF or “1” when ON.

Number of Bytes

• • •

1 2 2 2111 1 2 1 1

Number of Bytes 12 2135 13 2 11

dn: reads data of the specified number of bits (n=1 to 256)

dn=0(OFF)

dn=1(ON)

030206E.EPS

● Example:

Reading the status of alarm-1 of the VJ Series signal conditioner with communication

address-1.

The following command reads the status of alarm-1 (I0009) at communication address-1.

[Command]

[STX]01010BRDI0009,00199[ETX][CR]

The following response is returned with respect to the above command. (Alarm-1 is ON.)

[Response]

[STX]0101OK18D[ETX][CR]

Alarm has been ON since "1" was returned.

030207E.EPS

3rd Edition : Oct. 15, 2007-00

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