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Stopping communications in ansi x3.28, Ansi x3.28 "=" command example, Ansi x3.28 – Watlow Series 734 Data Communications User Manual

Page 15: Stopping communications in ansi x3.28 protocol

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15

WATLOW Series 733/734

How to Use Data Communications

ANSI X3.28 "="

Figure 8 -
ANSI X3.28 "="
Command Example.

1 0

0 4

ASCII
Characters

HEX Value

ASCII
Character

HEX
Value

1

Space

5

0

0

41

4C

31

20 35 30 30

=

3D 20

A

L

02

03

Optional

Carriage

Return

4F

O

Stopping Communications in ANSI X3.28 Protocol

The master device, your computer, must end communications with Device #4 by
using Data Link Escape (DLE) and End of Transmission (EOT) characters.

Enter in ASCII:

Response from the 733/734:
None

ANSI X3.28 "=" Command Example

The "=" Command sets a specific 733/734 prompt to a specific value. The general
command syntax applies to all commands. The definition and number of argu-
ments depends on the command itself. See Table 5, Pages 17.

In this example, you want to change the Alarm 1 Low value to 500°. Here, the "="
command will do the job.

'"=" command Syntax with ANSI X3.28 Protocol:
= data.1 data.2

With the "=" command, data.1 is the Series 733/734 prompt, in this case Alarm 1
Low , A1LO. Data.2 is the value you want to set for that prompt, in this example,
500.

Enter in ASCII:
= A1LO 500
The hex string is:
023D2041314C4F2035303003

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