Watlow Series 734 Data Communications Manual de usuario descargar pdf (Pagina 16)

How to Use Data Communications

WATLOW Series 733/734

ANSI X3.28 "?"

Figure 9 -

ANSI X3.28 "?"

Command Example.

<ETX>

ASCII

Characters

HEX

Value

41 4C31

Space

3F 20

<STX>

02 03

Optiona

Carriag

Return

Response from the Series 733/734:

<ACK>

The hex response string is:

• You'll find the the complete list of "=" command arguments (prompts and value

limits) in Table 5, Pages 17-19.

ANSI X3.28 "?" Command Example

You need to know the Alarm 1 Low value (A1LO). The "?" uses a variation of the

message syntax shown just below. This syntax requires the protocol start of

text and end of text characters.

"?" command syntax with ANSI X3.28 Protocol:

Enter in ASCII:

The hex string will be:

023F2041314C4F03

First response from the Series 733/734:

<ACK>

The <ACK> hex response string is:

Your computer's confirming response:

<EOT>

The <EOT> response hex string is:

Second response from the Series 733/734:

The hex string is:

023530302003

Your computer's next response:

<ACK> or < NAK> (if the message needs to be repeated).

The hex string is:

06 or 15

Final response from the Series 733/734:

<EOT>

The hex string is:

<STX>

ASCII 5

Characters 0

HEX

Value 02 35 30 30 20 03

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 22 23 24

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Watlow Series 734 Data Communications Manual de usuario Pagina 16

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