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IV. Commands
1.
INPUT1 (reads the temperature of the primary thermistor)
Write Command: NA
Read Command: 01
Interpret:
Convert the hexadecimal “return value” to decimal and divide by 100
10
to
interpret as the temperature in °F/°C.
Example:
Suppose the temperature is 10.00 °F (sensor type = 1).
Send:
*00010000000041^
Receive *000003e8c0^
Convert 000003e8
16
to decimal = 1000
10
Divide by 100 = (10.00 °F)
2.
DESIRED CONTROL VALUE (set value)
Write Command: NA
Read Command: 03
Interpret:
This command returns the set value determined by Input2 or as a fixed value
set by communications. Convert the hexadecimal “return value” to decimal
and divide by 100
10
to interpret.
3.
POWER OUTPUT
Write Command: NA
Read Command: 02 or 04
Interpret:
-511
10
represents –100% output.
0 returned is 0% output.
511
10
represents 100% output.
4.
ALARM STATUS
Write Command: NA
Read Command: 05
Interpret:
0 returned means no alarms.
Bit 0 = 1 means HIGH ALARM.
Bit 1 = 1 means LOW ALARM.
Bit 2 = 1 means COMPUTER CONTROLLED ALARM.
Bit 3 = 1 means OVER CURRENT DETECTED.
Bit 4 = 1 means OPEN INPUT1.
Bit 5 = 1 means OPEN INPUT2.
Bit 6 = 1 means DRIVER LOW INPUT VOLTAGE.
Example:
Suppose there are two alarm conditions: HIGH ALARM and OVER CURRENT
DETECTED.
Send: *00050000000045^
Receive: *0000000989^
Convert 00000009
16
to binary: 0001001
2
(bit 3 and bit 0 are set)
5.
INPUT 2
Write Command: NA
Read Command: 06
Interpret:
When a secondary thermistor temperature sensor is used, the temperature it
is sensing can be read. Convert the hexadecimal “return value” to decimal
and divide by 100
10
to interpret as °F/°C.
