Yokogawa JUXTA M Series Digital Limit Alarms MVTK Manuel d'utilisateur télécharger pdf (Page 55)

5-9

IM 77J04J11-01E 1st Edition : 2006.08.25-00

08 Performs loop back test

● Function

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

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

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

• Any value can be selected for send data.

● Message (for normal operation)

211None

4221

Number of bytes in RTU mode

Number of bytes in ASCII mode

Address

Number

(ADR)

Start of

Message Mark

(:)

Element Function

Code (08)

00*

0000

Send Data

(any)

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

(ADR)

Start of

Message Mark

(:)

Element Function

Code (08)

0000

Same as

send data

Response (continued)

Error

Check

End of Message

Mark (CR+LF)

None2

● Example:

Sending data 1234 (HEX) to the M Series with address number 01 to check connection for

communication.

The following message sends 1234 (HEX) to address number 01 in the ASCII mode.

[Message]

: 010800001234B1[CR][LF]

Start of message mark

When the 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]

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Yokogawa JUXTA M Series Digital Limit Alarms MVTK Manuel d'utilisateur Page 55

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