12-3.2 Message formation
Various factors used for constituting the message are specified as below.
Indicates the end of message.
Indicates abnormal response message.
Indicates normal response message.
Indicates command message.
Indicates the start of message.
Description
0DcrTerminator
21!
Response(abnormal)
24$Response(normal)
23#Command
25%Header
ASCII code
(HEX)
characterName
[Control code]
[Transmission destination and transmission source]
Indicated with 2 bits decimal number. (H) indicates 10 bits and (L) indicates 1 bit. 01~31(ASCII
code) is valid.
To display communication station No. (transmission destination) used for receiving command message
in command message.
To display communication station No. (transmission source) used for transmitting response
message in response message.
Namely, transmission destination and transmission source are the same communication station
No.
When full station transmission (Command message is transmitted to all communication stations
simultaneously.) is applied, transmission destination of command message is "FF", and response
message in relation to this command message will not be sent back.
[Block Check Character (BCC)]
Indicated with 2 bits hexadecimal number (00~FF, ASCII code). Horizontal parity is used for
checking the error code in transmitted data.
However, when * * instead of BCC is input, transmission can be performed without BCC. In this
case, there is still BCC in response.
Refer to "Compiling method of BCC code" on the next page.
[Error code]
Indicated with 2 bits decimal number. The details will be displayed if error occurs.
Refer to " Error codes table" on page 195.
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