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Structure of Command/Response Text Section 5-3
5-3 Structure of Command/Response Text
The command/response text constitutes the main body of a command/
response frame. The structure of the command/response text is described
below.
Command Text The command text consists of the MRC (Main Request Code) and the SRC
(Sub Request Code), followed by the required data.
Response Text The response text consists of the MRC and SRC, followed by the MRES
(Main Response Code), the SRES (Sub Response Code), and the required
data.
If the Temperature Controller fails to execute a specified command, it gener-
ates a response consisting of the MRC, SRC, MRES, and SRES only.
List of Services
STX
Node
No.
Sub-
address
SID
FINS-mini
command text
ETXBCC
02H 03H“00” “0”
MRC SRC Data
2 2 bytes
STX
Node
No.
Sub-
address
End
code
FINS-mini
response text
ETXBCC
02H 03H“00”
MRC SRC Data
22 bytes
MRES SRES
22
MRC SRC Service name Description
“01” “01” Read from Variable Area This service reads from the variable
area.
“01” “02” Write to Variable Area This service writes to the variable area.
“01” “04” Read from Multiple Vari-
able Area
This service performs non-consecutive
multiple reads from the variable area.
“01” “13” Write to Multiple Variable
Area
This service performs non-consecutive
multiple writes to the variable area.
“05” “03” Read Controller Attribute This service reads the model number
and the communications buffer size.
“06” “01” Read Controller Status This service reads the run status of the
Controller.
“08” “01” Echoback Test This service performs the echoback
test.
“30” “05” Operation Commands This service performs RUN/STOP, AT
Execute/Cancel, Move for Setting Area
1, etc.
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