Characters
Value (Decimal)
Value (Hex)
space
32
0x20
0
48
0x30
0
48
0x30
space
32
0x20
D
68
0x44
I
73
0x49
G
71
0x47
I
73
0x49
T
84
0x54
E
69
0x45
L
76
0x4C
space
32
0x20
Q
81
0x51
P
80
0x50
C
67
0x43
space
32
0x20
Total = 1249
Total = 0x4E1
12.4.
Examples - Gamma protocol over serial connection
Following strings represent valid commands and corresponding checksums.
Do not type the “” quotes and the spaces are significant. These examples
assume unit address is set to 1 and use HV channel 1.
Note:
Command checksum can be set to “00” to bypass checksum field verification by the
controller. The ‘cr’ is ASCII carriage return character.
Example 1
Command code 0x01 - get controller model
Tx – “~ 01 01 22” + cr.
Rx – “01 OK 00 DIGITEL MPCQ 2E” + cr
Example 2
Command code 0x0A - get pump current
Tx – “~ 01 0A 01 B3” + cr
Rx – “01 OK 00 1.33E-11 AMPS C5” + cr
Example 3
Command code 0x0B - get pump pressure
Tx – “~ 01 0B 01 B4” + cr
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900031_J
900031_J - Serial communication
