Refrigeration Control Modes
Software Overview • 29
10.3.4.2. Configuring Controllers for Superheat and Suction Mode
To configure the controller as a master in the Superheat and Suction mode, the following parameters must be set:
Note that if the Modbus address or baud rate is changed, the controller must be rebooted.
To configure the controller as a slave case controller in a lineup where the master controller is Superheat and Suction mode, the following
parameters must be set:
Parameter
Description
Parameter Value for Master
Controller
CrE
Control Type
Superheat and Suction
SSCP
Superheat and suction control probe selection
User choice, Average Lineup
Recommended
EEVCnt
Number of EEVs in the case
0-3
StandaloneCC
Yes = Controller is standalone (no lineup)
No = Controller is a master or slave in a lineup
NO
XEV20D-1 V1
Valve assigned to XEV20-1 valve output 1
EEPR
S1Addr
Modbus address of slave device 1
2 if 1 slave CC is present; otherwise set at 0
S2Addr
Modbus address of slave device 2
3 if 2 slave CC are present; otherwise set at 0
S3Addr
Modbus address of slave device 3
4 if 3 slave CC are present; otherwise set at 0
S4Addr
Modbus address of slave device 4
5 if 4 slave CC are present; otherwise set at 0
S5Addr
Modbus address of slave device 5
6 if 5 slave CC are present; otherwise set at 0
Modbus_Addr
Modbus address of this controller
1
Baud
Baud of Modbus communication
19200
Table 10-4
- Master Controller Configurations for Superheat and Suction Control Mode
Parameter
Description
Parameter Value for Master
Controller
CrE
Control Type
Superheat only
SSCP
Superheat and suction control probe selection
User choice, Average Lineup
Recommended
EEV
EEV driver
XEV20
EEVCnt
Number of EEVs in the case
0-3
StandaloneCC
Yes = Controller is standalone (no lineup)
No = Controller is a master or slave in a lineup
NO
XEV20D-1 V1
Valve assigned to XEV20-1 valve output 1
EEPR
S1Addr
Modbus address of slave device 1
0
S2Addr
Modbus address of slave device 2
0
S3Addr
Modbus address of slave device 3
0
S4Addr
Modbus address of slave device 4
0
S5Addr
Modbus address of slave device 5
0
Modbus_Addr
Modbus address of this controller
Set based on the S1-S5Addr of the master
CC
Baud
Baud of Modbus communication
19200
Table 10-5
- Slave Controller Configurations Where Master is Superheat and Suction Mode
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