5. Operation Procedure
5.1 Transmission message format
The transmission message is composed by ASCII characters and a specified trailing code. The default setting of the trailing code is CR (carriage return code = H0D). Refer to section 5.6 for setting the trailing code other than CR.
The maximum length of a message is 896 bytes. An example of the message is shown below.
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
″ 0″
″ 1″
″ 2″
″ A″
″ B″
″ 7″
″ 8″
″ 9″
CR
In the above figure, ″ x″ means an ASCII character. For example, ″ 0″ is H30.
When the above message is received or transmitted, the data arrangements in the T3 registers are as follows.
Register n n+1 n+2 n+3 n+4
F | 8 7 | 0 | |
″ 1″ |
|
| ″ 0″ |
″ A″ |
|
| ″ 2″ |
″ 7″ |
|
| ″ B″ |
″ 9″ |
|
| ″ 8″ |
|
|
| CR |
Transmission message
″ 0″
″ 1″
″ 2″
″ A″
″ B″
″ 7″
″ 8″
″ 9″
CR
38 ASCII Interface Module (AS311)
