Cyrustek ES51922 serial protocol
The information in this document are taken from the Cyrustek ES51922 datasheet.
Serial signaling
19230 baud, 7 bits frames, odd parity, 1 stop bit.
Packet format
14 frames, including the line ending markers CR and LF.
| 0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
| Range |
Digit4 |
Digit3 |
Digit2 |
Digit1 |
Digit0 |
Function |
Status |
Option1 |
Option2 |
Option3 |
Option4 |
CR |
LF |
Fields
Range
| Code |
V |
2-range auto A |
22A |
Manual A |
ADP |
Ω |
Frequency |
Capacitor |
| 011 0000 |
2.2000V |
Lower range (IVSL) |
22.000A |
2.2000A |
ADP4 |
220.00Ω |
22.00Hz |
22.000nF |
| 011 0001 |
22.000V |
Higher range (IVSH) |
|
22.000A |
ADP3 |
2.2000KΩ |
220.0Hz |
220.00nF |
| 011 0010 |
220.00V |
|
|
220.00A |
ADP2 |
22.000KΩ |
|
2.2000µF |
| 011 0011 |
2200.0V |
|
|
2200.0A |
ADP1 |
220.00KΩ |
22.000KHz |
22.000µF |
| 011 0100 |
220.00mV |
|
|
22000A |
ADP0 |
2.2000MΩ |
220.00KHz |
220.00µF |
| 011 0101 |
|
|
|
|
|
22.000MΩ |
2.2000MHz |
2.2000mF |
| 011 0110 |
|
|
|
|
|
220.00MΩ |
22.000MHz |
22.000mF |
| 011 0111 |
|
|
|
|
|
|
220.00MHz |
220.00mF |
Digits
| Code |
Digit |
| 011 0000 |
0 |
| 011 0001 |
1 |
| 011 0010 |
2 |
| 011 0011 |
3 |
| 011 0100 |
4 |
| 011 0101 |
5 |
| 011 0110 |
6 |
| 011 0111 |
7 |
| 011 1000 |
8 |
| 011 1001 |
9 |
Function
| Code |
Mode |
VBAR=0 |
VBAR=1 |
| 011 0000 |
22A Current |
Don't care |
Don't care |
| 011 0001 |
Diode |
Don't care |
Don't care |
| 011 0010 |
Frequency |
Don't care |
Don't care |
| 011 0011 |
Ω |
Don't care |
Don't care |
| 011 0100 |
Temperature |
Don't care |
Don't care |
| 011 0101 |
Continuity |
Don't care |
Don't care |
| 011 0110 |
Capacitance |
Don't care |
Don't care |
| 011 0111 |
? |
? |
? |
| 011 1000 |
? |
? |
? |
| 011 1001 |
Manual Current |
Don't care |
Don't care |
| 011 1010 |
? |
? |
? |
| 011 1011 |
Voltage |
Don't care |
Don't care |
| 011 1100 |
? |
? |
? |
| 011 1101 |
Auto µA Current |
Auto µA Current |
Auto 220.00A/2200.0A |
| 011 1110 |
ADP |
Don't care |
Don't care |
| 011 1111 |
Auto mA Current |
Auto mA Current |
Auto 22.000A/220.00A |
Status
| Bit 6 |
Bit 5 |
Bit 4 |
Bit 3 |
Bit 2 |
Bit 1 |
Bit 0 |
| 0 |
1 |
1 |
Judge |
Sign |
BATT |
OL |
Options
Option 1
| Bit 6 |
Bit 5 |
Bit 4 |
Bit 3 |
Bit 2 |
Bit 1 |
Bit 0 |
| 0 |
1 |
1 |
MAX |
MIN |
REL |
RMR |
Option 2
| Bit 6 |
Bit 5 |
Bit 4 |
Bit 3 |
Bit 2 |
Bit 1 |
Bit 0 |
| 0 |
1 |
1 |
UL |
Pmax |
Pmin |
0 |
Option 3
| Bit 6 |
Bit 5 |
Bit 4 |
Bit 3 |
Bit 2 |
Bit 1 |
Bit 0 |
| 0 |
1 |
1 |
DC |
AC |
AUTO |
VAHZ |
Option 4
| Bit 6 |
Bit 5 |
Bit 4 |
Bit 3 |
Bit 2 |
Bit 1 |
Bit 0 |
| 0 |
1 |
1 |
0 |
VBAR |
Hold |
LPF |