3-8. flag query (20dh) – IAI America TTA User Manual

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4-3-8.

Flag Query (20DH)

Function: Query flags.

Data name

Data range (value)

Data size

[bytes]

Cumulative

bytes [bytes]

Endian Sign

extension

Unit

Description Remarks

Big Little Yes No

Command

Header '!'

1

1

Station 'XX(h)'

2

3

Message ID

'20D(h)'

3

6

Program number

'XX(h)'

2

8

‘00(h)’ in the case of global flag specification

Query start flag
number

'XXXX(h)' 4 12

Be sure to specify “Category head flag number +
Multiple of 8.”

Number of query
flags

'XXXX(h)' 4 16

The number of flags will be limited based on the
send/receive buffers.

SC 'XX(h)'

2

18

CR 0Dh

1

19

LF 0Ah

1

20

Normal response

Header '#'

1

1

Station 'XX(h)'

2

3

Message ID

'20D(h)'

3

6

Program number

'XX(h)'

2

8

‘00(h)’ in the case of global flag specification

Response start flag
number

'XXXX(h)' 4 12

Number of response
flags

'XXXX(h)' 4 16

The number of flags will be limited based on the
send/receive buffers.

Flag data (*1)

'XX(h)'

2

18

8 bits from the head flag.

Remaining flag data

Data indicated by *1

for the number of

remaining data

MAX

16382

MAX

16400

Remaining flag data = 2 bytes x (Max 8192 – 1) =
16382 bytes

SC 'XX(h)'

2

MAX

16402

CR 0Dh

1

MAX

16403

LF 0Ah

1

MAX

16404

Error

respon

se

Error response
format

Refer to the error

response format.

10 10

(Note 1) Add H (or h) at the end of each data expressed in hexadecimal notation. If there is no H or h at the end, the data is considered a decimal.
(Note 2) Data enclosed in single quotation marks indicates an ASCII code. Data is a hexadecimal ASCII code if (h) is added before the closing quotation mark, or a decimal ASCII code if (d) is

added before the closing quotation mark.

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