Yokogawa JUXTA VJ Series Limit Alarms Manual do Utilizador descarregar pdf (Página 47)

5-7

IM 77J01J11-01E 3rd Edition : Oct. 15, 2007-00

08 Performs a loop back test.

● Function

This function code is used to check the connection for communication.

• For the format of responses in the event of failure, see subsection 5.2.2.

• The element marked with * is "00" (fixed).

• Any value can be selected to send data.

● Message (for normal operation)

211None

4221

Number of bytes in RTU mode

Number of bytes in ASCII mode

Address

Number

(ADDRESS)

Start of

Message Mark

(:)

Element Function

Code (08)

00*

0000

Send Data

(any)

050216E.EPS

Message (continued)

Error

Check

End of Message

Mark (CR+LF)

None2

● Response (for normal operation)

211None

4221

Number of bytes in RTU mode

Number of bytes in ASCII mode

Address

Number

(ADDRESS)

Start of

Message Mark

(:)

Element Function

Code (08)

0000

Same as

send data

050217E.EPS

Response (continued)

Error

Check

End of Message

Mark (CR+LF)

None2

● Example:

Sending data "1234h" in hexadecimal to the VJ Series signal conditioner with communica-

tion address 1 to check connection for communication.

The following message sends "1234" (hexadecimal) to communication address 1 in the

ASCII mode.

[Message]

: 010800001234B1[CR][LF]

Start of message mark

When connection for communication is normal, the response whose configuration is the

same as that of the message is returned with respect to the above message.

[Response]

: 010800001234B1[CR][LF]

1 2 ... 42 43 44 45 46 47 48 49 50 51 52 ... 59 60

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