Heatcraft Mohave, Installation & Operation Manual, Page: 74 / 76

74
Defrost #8 start time (0000 to 2330 HHMM), 2530 if not used Word 41
DF08
Defrost #9 start time (0000 to 2330 HHMM), 2530 if not used Word 42
DF09
Defrost #10 start time (0000 to 2330 HHMM), 2530 if not used Word 43
DF10
Defrost #11 start time (0000 to 2330 HHMM), 2530 if not used Word 44
DF11
Defrost #12 start time (0000 to 2330 HHMM), 2530 if not used Word 45
DF12
Number of CU fans (1 to 4) Word 46
CU Fan #1 mode (0=off, 1=on, 2=press. ctl., 3=temp. ctl.) Word 47
FAN1
CU Fan #2 mode (0=off, 1=on, 2=press. ctl., 3=temp. ctl.) Word 48
FAN2
CU Fan #3 mode (0=off, 1=on, 2=press. ctl., 3=temp. ctl.) Word 49
FAN3
CU Fan #4 mode (0=off, 1=on, 2=press. ctl., 3=temp. ctl.) Word 50
FAN4
CU Fan #1 On pressure (125 to 315 psia), displayed as 110 to 300 psig Word 51
F1ON
CU Fan #2 On pressure (125 to 315 psia), displayed as 110 to 300 psig Word 52
F2ON
CU Fan #3 On pressure (125 to 315 psia), displayed as 110 to 300 psig Word 53
F3ON
CU Fan #4 On pressure (125 to 315 psia), displayed as 110 to 300 psig Word 54
F4ON
CU Fan #1 Off pressure (125 to 315 psia), displayed as 110 to 300 psig Word 55
F1OF
CU Fan #2 Off pressure (125 to 315 psia), displayed as 110 to 300 psig Word 56
F2OF
CU Fan #3 Off pressure (125 to 315 psia), displayed as 110 to 300 psig Word 57
F3OF
CU Fan #4 Off pressure (125 to 315 psia), displayed as 110 to 300 psig Word 58
F4OF
CU Fan #1 On temperature (+30 to +90 degrees F) Word, signed 59
F1ON
CU Fan #2 On temperature (+30 to +90 degrees F) Word, signed 60
F2ON
CU Fan #3 On temperature (+30 to +90 degrees F) Word, signed 61
F3ON
CU Fan #4 On temperature (+30 to +90 degrees F) Word, signed 62
F4ON
CU Fan #1 Off temperature (+30 to +90 degrees F) Word, signed 63
F1OF
CU Fan #2 Off temperature (+30 to +90 degrees F) Word, signed 64
F2OF
CU Fan #3 Off temperature (+30 to +90 degrees F) Word, signed 65
F3OF
CU Fan #4 Off temperature (+30 to +90 degrees F) Word, signed 66
F4OF
(not used) --- 67 to 7999
Remote Control (0xAA55=activate, 0xFF00=deactivate) Word 8000
NOTE: The Write Remote Control command with a data value of 'activate'
is ignored unless the Mohave Control is in "Off" or "Service" modes
Diagnostic -
CMD 0x08 (Read/Write)
Sub-Function
Restart communications 0x01
Clear Counters and Diagnostic Register 0x0A
Read Bus Message Counter 0x0B
Read Bus Communication Error Counter 0x0C
Read Bus Exception Error Counter 0x0D
Read Slave Message Counter 0x0E
Read Slave No Response Counter 0x0F
Read Slave NAK Counter 0x10
Read Slave Busy Counter 0x11
Read Bus Character Overrun Counter 0x12
Clear Overrun Counter and Flag 0x14
Activate Remote Control mode 0xAA55
Deactivate Remote Control mode 0xFF00
NOTE: The Activate Remote Control command is ignored
unless the Mohave Control is in "Off" or "Service" modes
Mohave Hot Gas Control Modbus Definitions