Kodiak Recirculating Chiller Technical Manual
Manual # 820-0109, Rev. Y, 07/08/10
- 46 -
Check Lytron’s website
www.Lytron.com
for the most current technical information.
Where: Alarm Flags Status in Bit encoded Byte (2 chars). Assignments are:
Bit 7
(MSB) Over Temp:
Over Temperature Alarm is lit
Bit 6
Lo Temp:
Low Temperature Alarm is lit
Bit 5
Low Flow:
Low Flow Alarm is lit
Bit 4
Low Level:
Low Level Alarm is lit
Bit 3
Not used:
Not used
Bit 2
Not used:
Not used
Bit 1
Audible Alarm on:
Alarm transistor (Al toggle)
Bit0
(LSB); Summary Alarm on: Beeps computer
PlantTemp and SetTemp encoded (2-byte hex (
°
Cx100)
Pressure encoded is integer value (hex 1-byte)
1.6.3 Read Plant Temperature
This command (‘T’) will cause the Chiller Control to return the plant temperature in a status
string with the following form:
^JT PlantTemp^M
Where: PlantTemp Plant Temperature Value (2-byte hex (
°
Cx100)
^J ^M Ascii Linefeed and Carriage Return
1.6.4 Read Set Point Temperature
This command (‘S’) will cause the Chiller Control to return the current setpoint temperature in
a status string with the following form:
^JS SetTemp^M
Where: SetTemp Setpoint Temperature Value (2-byte hex (
°
Cx100)
^J ^M Ascii Linefeed and Carriage Return
1.6.5 Read User Menu Configuration
This command (‘U’) will cause the Chiller Control to return the current User Menu configuration
information in a status string with the following form:
^JU UserControlFlags OverTempAlmLmt LowTempAlmLmt OffsetCal^M
Where: UserControlFlags Status in Bit encoded Byte (2 chars). Audible Alarm Enable & Fault
Chiller Shutoff are encoded in this byte as follows:
Bit 7:
(MSB): Chiller PowerOn : Host signal to turn on
Bit 6:
Chiller PowerOff:
Host signal to turn off
Bit 5:
Chiller F/C:
Host Signal to toggle F/C
Bit 4:
Fault Chiller Shut Off : Fault chiller shutoff is enabled, lights host window
Bit 3:
Audible Alarm Enable: Audible Alarm is enabled
Bit 2:
Not used
Bit 1:
Remote Start NC: Remote start contact closure to run, else Off
Bit 0:
(LSB); Remote Start NO:Remote start contact open to run, else Off
OverTempAlmLmt: High Temp Limit Setpoint (2-byte hex (
°
Cx100)
LowTempAlmLmt: Low Temp Limit Setpoint (2-byte hex (
°
Cx100)
OffsetCal Plant Temp Offset (2-byte hex (
°
Cx100)
^J ^M Ascii Linefeed and Carriage Return