Kikusui KDS6-0.2TR, Operation Manual

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30 Remote Control KDS6-0.2TR
4.2 Messages and Terminators
This section explains the designations used in this manual and the details of commu-
nication between the computer (the controller) and the KDS6-0.2TR (the device).
4.2.1 Messages
The orders transmitted from the computer to the KDS6-0.2TR are called “program
messages.” The responses transmitted from the KDS6-0.2TR to the computer are
called “response messages.” The program messages include command messages
that execute and set specific product functions, and query messages that inquire
about the KDS6-0.2TR’s settings. Each message is composed of a program header
section and a data section.
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Description method for program messages
A space (ASCII:20h) is required between the program header section and the data
section.
Multiple data items are linked with “,” (ASCII:2Ch).
Program message linking is performed with “;” (ASCII:3Bh).
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Acknowledge messages (RS-232C)
The acknowledge messages are specific to the RS-232C interface and represent
information sent from the KDS6-0.2TR to the computer. The messages indicate that
the processing of command messages is complete.
The acknowledge messages consist of ASCII-code character strings; these messages
come in two types:
• OK: Normal end
• ERROR: Occurrence of error such as a syntax error
A SILent command message can be used to specify whether or not an acknowledge
message should be returned. The KDS6-0.2TR is initially set not to return the
acknowledge message.
Program header Space (ASCII:20h) Data
Program header Space (ASCII:20h) Data
,
Program message
;
Acknowledge message