86
8.6 Communication
COMMS-1: Communication Protocol Selection
Protocol
1) ModBus RTU
0 - Modbus RTU
2 - BACnet MS/TP
Default: ModBus RTU
CommsProtocolSelection.
COMMS-3: Communications Write Access
Write Access
3) Disabled
0 - Disabled
1 – Enabled
Default: Disabled
EnableCommsWrites(otherthanControl)
COMMS‐1‐0,1,2,3
COMMS-4: Comms Loss Fault
Comm Loss Fault
4) Disabled
0 – Fault
1 – Stop (uses selected
stop mode)
2 – Hold Speed
Default: Disabled
Operatingmodewhencommunicationssignalis
lostifControlorReferenceissettoComms;
COMMS‐1‐0,1,2,3
COMMS-5: Timeout
Comm Loss Delay
5) 1.0s
Min: 0s
Max: 120.0s
Default: 1.0s
Timeittakestodeterminethelossof
communicationsignal:COMMS‐1‐0,1,2,3
COMMS-6: RS-485 Baudrate
RS485 Baud
6) 19200
0 - 9600
1 - 19200
2 - 38400
3 - 57600
4 - 76800
5 – 115200
Default: 19200
BaudRate
COMMS‐1‐0,2
COMMS-7: RS-485 Parity Stop
Modbus RTU
7) None
0 - None, 2 Stop
1 - Even, 1 Stop
2 - Odd, 1 Stop
3 – None, 1 Stop
Default: None
Parity/Stopbitsselection
COMMS‐1‐0,2
COMMS-9: ModBus RTU Add
ess
ModBus RTU Addr
9) 247
Min: 1
Max: 247
Default: 247
ModbusDeviceAddress
COMMS‐1‐0,2
COMMS-10: BACnet MAC/ID
BACNET MS/TP Node
10) 1
Min: 0
Max: 127
Default: 1
BACnetMAC/ID
COMMS‐1‐2,3
COMMS-11: BACnet MS TP Max Master
BACNET MS TP Max Mstr
11) 127
Min: 0
Max: 127
Default: 127
BACnetMaxMaster
COMMS‐1‐2,3
COMMS-12: BACnet Device Instance
BACNET Instance
12) 223000
Min: 0
Max: 4194303
Default: 223000
BACnetDeviceInstance(0‐4194303,default
2230000)COMMS‐1‐2,3
Comms‐27–30
These parameters are only accessible through
remote communications (Modbus/BACnet) and
are used to control VFD operation. Comms
Run/stop, Comms Command Frequency, and
Comms PID Setpoint must be enabled from their
associated settings before being used (Primary-
24, Primary-23, Primary-41, Primary-42, Primary-
47).
COMMS-27: Comms Run/Stop
Run/Stop
27) Stop
0 - Stop
1 – Run
Default: Stop
COMMS-28: Comms Commend Frequency
N/A
28) 15Hz
Min: Low Freq Limit
Max: High Freq Limit
Default: 15.00Hz
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