Yamatake Azbil CMQ-V Series, Руководство пользователя

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4 - 3 Description of Commands
11
Chapter 4. COMMUNICATION PROCEDURE
■
Continuous data read command (RS command)
This command reads data of continuous addresses by a single command.
●
Send message
This command enables the content of continuous data addresses starting with the
specified read start address to be read as a single message. The figure below
shows the structure of the application layer of the send message when the data is
read.
●
Response message
If the message is correctly received, a response message corresponding to the
command content is returned.
The figure below shows the structure of the application layer of the response
message when the data is read.
●
Maximum number of read data per message
Up to 10 words for both RAM and EEPROM areas
(2) (1) (3) (4)
Application layer
(1) Continuous read command
(2) Data delimiter
(3) Data address
(4) Number of read data
R 0 S , 1 5 1 W , 1
(2)
0
• Normal termination (reading of single data item)
0
• Normal termination (reading of multiple data items)
0 0
• Abnormal termination
X X
The abnormal termination code is entered at XX.
For details of codes, refer to;
4-4, Termination Code Table (on page 15).
(2) (1) (3)
(1) Termination code
(2) Data delimiter
(3) Data
(4) Data 2 to (n-1)
(5) Data n
,
(1) (2) (3) (4) (5)
, , ,
(2) (2)
(1)