10
POWERMAX65/85 SERIAL COMMUNICATION PROTOCOL
Command Name Register
(hex)
Description
pressure_set_max
Scaling is 16-bit, fixed-
point binary with 1-bit sign
at MSB and 7-bit decimal
at LSB.
0x209D Reads the maximum pressure setting limit for the power
supply.
Sample: :0104209D00013D0D0A
Response: :0104022700D2
pressure_set_max value :010402xxxxcc
Where xxxx equals the hex value of a decimal value. Divde by
128 to get the PSI.
cc equals LRC (checksum)
0x2700 = 9984 decimal ÷ 128 = 78
In this example, the maximum pressure setting limit for the
power supply is 78 PSI.
arc_time_low
arc_time_high
0x209E
0x209F
Reads the amount of time the arc has been on in seconds. The
commands work together to read the upper and lower 16 bits
of the 32-bit unsigned integer.
Sample: :0104209E00023B0D0A
Response: 010404lllhhhcc
llll = ARC time lower 16 bits
hhhh – ARC time higher 16 bits
cc equals LRC (checksum)
Sample responses:
1 second – :01040400010000F6
60 seconds (1 minute) - :010404003C0000BB
3600 seconds (1 hour) - :0104040E100000D9
360000 seconds (100 hour) - :0104047E40000534
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