LAMBDA 721 OPERATION MANUAL – REV. 1.10C (20210517)
21
LED On/Off
State
Tx/-
Delay/-
Rx
Ver. Total
Bytes
Byte
Offset
(Len.)
Value
Alt-
key-
pad #
Ctrl-
char
ASCII
def./-
char.
16-bit “Word” value (Little Endian)
Dec. Hex. Binary
Dec. Hex.
Binary
LED 1 On
Tx
All
2
0
1
01 0000 0001 0001 ^A <SOH>
272 0110 00000001 00010000
1
16
10 0001 0000 0016 ^P <DLE>
LED 2 On
Tx
All
2
0
2
02 0000 0010 0002 ^B <STX>
536 0218 00000010 00011000
1
24
18 0001 1000 0024 ^X <CAN>
LED 3 On
Tx
All
2
0
4
04 0000 0100 0004 ^D <EOT>
1056 0420 00000100 00100000
1
32
20 0010 0000 0032
space
LED 4 On
Tx
All
2
0
8
08 0000 1000 0008 ^H <BS>
2088 0828 00001000 00101000
1
40
28 0010 1000 0040
(
LED 5 On
Tx
All
2
0
16
10 0001 0000 0016 ^P <DLE>
4144 1030 00010000 00110000
1
48
30 0011 0000 0048
0
LED 6 On
Tx
All
2
0
32
20 0010 0000 0032
space
8248 2038 00100000 00111000
1
56
38 0011 1000 0056
8
LED 7 On
Tx
All
2
0
64
40 0100 0000 0064
@
16448 4040 01000000 01000000
1
64
40 0100 0000 0064
@
End of Ring
Buffer
Tx
All
2
0
240 F0 1111 0000 0240
≡
61680 F0F0 11110000 11110000
1
240 F0 1111 0000 0240
≡
Rx
All
1
1
13
0D 0000 1101
^M <CR>
Completion indicator
NOTE: The ‘B’ or ‘b’ command and each 2-byte Ring Buffer entry, once transmitted, does not return anything,
except for End of Ring Buffer which returns an ASCII CR (carriage return) completion indicator (13 decimal, 0D
hexadecimal, 0000 1101 binary).
4.3.1
Turn on a discrete LED or a group of LEDs (‘M’ or ‘m’) Command
Command followed by 1 byte containing the bit-encoded ON/OFF states of all LEDs (1 – 7).
Table 4-12. Change the on/off state of one or more LEDs (‘M’ or ‘m’) Command.
Tx/-
Delay/-
Rx
Ver. Total
Bytes
Byte
Offset
(Len.)
Value
Alt-
key-
pad #
Ctrl-
char
ASCII
def./-
char.
Description
Dec. Hex. Binary
Tx
All
2
0
77
or
109
4D
or
6D
01001101
or
01101101
0077
or
0109
‘M’
or
‘m’
Command followed by 1 byte
containing the bit-encoded
ON/OFF states of all LEDs (1 – 7).
1
0
-
127
00
-
7F
00000000
-
01111111
0000
-
0127
^@
-
<NUL>
-
<DEL>
See
‘M’ Command 1
st
argument
(2
nd
byte) values for individual
LED ON/OFF state bit encoding
for a discrete LED value or
‘M’
Command 1
st
argument (2
nd
byte)
values for ON/OFF state bit
encoding for all LEDs and groups
for an LED group value.
Rx
All
1
1
13
0D 0000 1101
^M <CR>
Completion indicator
Summary of Contents for Lambda 721
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