CommStat
™
4
Modbus Adapter
Installation & Operation
Page 11
Notes:
Note
Description
1
Bit<7:5> are always clear;
if bit<4> is set, controller senses smoke;
if bit<3> is set, controller senses high hydrogen level;
if bit<2> is set, controller senses generator being used;
if bit<1> is set, controller senses aux 1 signal present;
if bit<0> is set, controller senses aux 2 signal present.
2
Bit<7:5> are always clear;
if bit<4> is set, this unit has 24V present;
if bit<3> is set, this unit has 230V present;
if bit<2> is set, this unit is locked out;
if bit<1> is set, this unit is operating in AC mode;
if bit<0> is set, this unit is operating in economizer mode.
[Note] If bit<1:0> are clear, it is undetermined whether this unit is operating in AC or economizer mode.
3
Bit<7> is always clear;
if bit<6> is set, this unit is outputting to Y;
if bit<5> is set, this unit is outputting to 2;
if bit<4> is set, this unit is outputting to O;
if bit<3> is set, this unit is outputting to W;
if bit<2> is set, this unit is outputting to G;
if bit<1> is set, this unit is outputting to MAR;
if bit<0> is set, this unit is outputting to DCAMR.
4
If bit<7> is set, master controller is in high building temp 2 lockout;
if bit<6> is set, master controller is in high building temp 1 lockout;
if bit<5> is set, master controller is in low building temp lockout;
if bit<4> is set, master controller is in smoke alarm lockout;
if bit<3> is set, slave controller's unit #2 is in lockout;
if bit<2> is set, slave controller's unit #1 is in lockout;
if bit<1> is set, master controller's unit #2 is in lockout;
if bit<0> is set, master controller's unit #1 is in lockout.
[Note] High temp building temp lockout and low building temp lockout are mutually exclusive.
