CITIZEN CT-S300 - Manual (Page 100)

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fn = 4: Function 4 Sending the Set Memory Switch Value
GS (E pL pH fn a fn = 4
[Code] <1d>H<28>H<45>pL pH fn a
[Range] (pL + pH
× 256) = 2
fn = 4
a = 1, 2, 3, 4
[Outline] • Sends the content of memory switch set in “a”.
• Sends the set value of data in 8-byte data raw in order of bits 8, 7, 6, ....
OFF: 30H (“0”)
ON : 31H (“1”)
Hex. No. of Data
Header 37H 1
ID 21H 1
Data 30H or 31H 8
NULL 00H 1