Yaesu FRG-100 Operating Manual page 38

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FRG-100 CAT Data Organization
bytes, depending on the parameters of the Update
comm nd sent by the computer. The detailsof
these ammands follow the descriptions of the
data.
(A) Flag Bytes
The first 3 bytes are treated as 24 1-bit flag fields:
a function is enabled (on) if a bit is set (I), and
disabled (off) if reset (0). Most of the functions
represented by these flags correspond to the radio
display
First Flag Byte
Bit 0: LOCK is active
(=
display)
Bit 1: Reserved for system
Bit 2: Reserved for system
Bit 3: Memory recall in progress
Bit 4: Memory tuning (M TUNE) activated
Bit 5: MEM operation
(=
display)
Bit 6: Reserved for system
Bit 7: VFO operation
(=
display)
Second Flag Byte
Bit 0: SCAN
Bit 1: Scan Delay
Bit 2: Group Scanning
Bit 3: Priority Scan
Bit 4: MUTE
Bit
5:
Reserved for system
Bit 6: Reserved for system
Bit 7: FAST tuning/scanning rate is activated
Third Flag Byte
Bit 0: SLEEP Timer ON
Bit 1: On-Timer ON
Bit 2 Off-Timer ON
Bit 3 Clock #1 Display
Bit 4: Clock #2 Display
Bit
5:
Set Mode Function
Bit
6:
Power OFF
Bit 7: 12/24 Hour Time Format
(B) Fourth Byte: Memory Number
The 4th byte of Update data contains a binary
value between 0 and 34h (52 decimal), indicating
the current memory number - 1 (or the last-selected
memory, if operating on a VFO).
(C)
5-Byte Operating Data Records
The Memory Number is followed by a 5-byte
record defining current operating conditions. This
record consists of 3-bytes of frequency data fol-
lowed by 1-byte of mode data and a 1-byte operat-
ing mode flag, as shown below in Table A.
Table A. 5-Byte Operating Data Record Format
VFOIMernmy Operating Flags
Each bit in this field signifies a state unique to
one VFO or half-memory
Table B. VFOIMem Byte Field
(D) VFO Data (5 bytes)
After the 5-byte Data Record for current opera-
tion is sent, a 5-byte VFO Data Record is sent. The
format of this record is the same as described for
the 5-Byte Operating Data Record (Table A).
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