STULZ CyberRow DX Series Installation, Operation & Maintenance Manual
4-49
4.9.7 Digital Output Packed Bit Variables
Bit
Digital Outputs 1
Digital Outputs 2
0
Global alarm
Reserved
1
Custom alarm 1
Reserved
2
Master fan enable
Reserved
3
DX1 enable
Reserved
4
DX1 liquid line solenoid
Reserved
5
Humidifi er enable
Reserved
6
Dual power output A
Reserved
7
Dual power output B
Reserved
8
Pump enable
Reserved
9
Custom alarm 2
Reserved
10
Custom alarm 3
Reserved
11
Reserved
Reserved
12
Reserved
Reserved
13
Reserved
Reserved
14
Reserved
Reserved
15
Reserved
Reserved
The R/W BMS variables fall into two categories. Variables like the temperature setpoint are permanent. As permanent
variables, they retain their value regardless of power loss or BMS communication failure. The controller's fl ash
memory is limited to one million write cycles for permanent variables. The other category is the integer and digital
variables that start with "BMS". These are expected to be changed frequently and require that the BMS is active when
changing them. All BMS variables require that the BMS "keep alive" parameter (Variable 100) changes between 1 and
2 within a 10 minute span. The general procedure is to set up variables like the BMS low fan speed and then write a
1 to the BMS "keep alive" address. If the controller does not see a 2 written to the BMS "keep alive" address within 10
minutes, all the BMS variables will revert to their previous values.
4.9.8 Unsigned Values for HTTP, SNMP / Modbus Holding Registers / Analog Values for BACnet
BMS
Address
Modbus
Address
BACnet
Address
Description
Default
Direction
100
229
1100
BMS keep alive parameter
0
R/W
101
230
1101
BMS low fan speed for CW units
0
R/W
102
231
1102
BMS run fan speed for CW units
0
R/W
103
232
1103
BMS dehum fan speed for CW units
0
R/W
4.9.9 Boolean Values for HTTP, SNMP / Modbus Coils / Binary Values for BACnet
BMS
Address
Modbus
Address
BACnet
Address
Description
Default
Direction
100
101
1100
BMS value to pause the unit
0
R/W
101
102
1101
BMS value to reset alarms
0
R/W
102
103
1102
Force rotation of units in group manual or BMS
0
R/W
103
104
1103
BMS value to switch CW sources
0
R/W
104
105
1104
BMS value to switch dual power primary
0
R/W
Summary of Contents for CyberRow DX CRS-042-G
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