Command Mode - AND Explosion Protected Weighing Indicator AD-4403-FP ST Series Instruction Manual

8-7 Command Mode

The indicator receives a command transmitted from a peripheral unit like a computer in the
communication procedure shown below, and operates in compliance with the command and responds
with a result.
* The communication procedure depends on the type of command.
* When the command is not accepted due to an error (improper command or faulty data), a
"negative acknowledgment" is made.
Communication procedure
Procedure
Procedure A
Procedure B
Procedure C
Procedure D
Response
* Any response to a command is made within 200 ms after receiving the command.
Acknowledgement
Negative Acknowledgement: Improper mode
Not acceptable because of a wrong mode.
Negative Acknowledgement: Improper Range
Not acceptable because data is out of the range.
Negative Acknowledgement: Improper Command / Data
Not acceptable because of a wrong data format
Response to Acceptable Commands
Host command
Indicator
Returns the same command as the one sent from the host for a sign of the
acknowledgement.
Host command
Indicator
Returns the data that the command requested.
Host command
Indicator
Returns the same command for a sign of the acknowledgement, and sends the
requested data with terminators, CR or CR LF (selectable at RSF-07)
Host command
Indicator
Returns all the requested data. Each command differs in the number of output
data
Press [ESC] to stop the data flow in the middle.
Type
command
data
data
command
data data
Procedure A
Procedure B, D Returns the data.
Procedure C
8-13
data
data EOF
...
Response
Returns the same command.
Returns the same command
and waits to receive the data.
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