Sentera Controls RDCV, Mounting And Operating Instructions

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MIW-RDCV-EN-002 - 27 / 04 / 2017 15 - 17
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Manual (slave) mode
HOLDING REGISTERS (Read / write)
Data type Description Data Default Values
40001 Device slave address unsigned int. Modbus device address 1—247 1
40002 Modbus baud rate unsigned int. Modbus communication baud rate 0—6 2
0 =
1 =
2 =
3 =
4 =
5 =
6 = 4.800
9.600
19.200
38.400
57.600
115.200
230.400
40003 Modbus parity mode unsigned int. Modbus parity check mode 0—2 1
0 =
1 =
2 = 8N1
8E1
8O1
40004 Device type unsigned int. Device type (read-only) 2300 2300 = RDCV9-AD
40005 HW version unsigned int. Hardware version of the device (read-only) XXXX 0 x 0100 = HW version 1.0
40006 FW version unsigned int. Firmware version of the device (read-only) XXXX 0 x 0300 = FW version 3.0
40007-
40008
Reserved, return 0
40009 Steps unsigned int. Starting step. Active when the number of the steps (40009) > 0 0—9 0
0 =
1 =
9 = 1 % per step
2 steps: Min / Max
10 steps
40010 Start step unsigned int. Starting step 0—9 0
0 =
1 = Start at the first step
Start at the second step
40011
Minimum output
value
unsigned int. Sets the minimum value of output signal 0—80 20 20 = 2 VDC / 4 mA / 20 % PWM
40012
Maximum output
value
unsigned int. Sets the maximum value of output signal 20—100 100 80 = 8 VDC / 16 mA / 80 % PWM
40013 Overwrite mode unsigned int. Selection of overwrite mode. 0—1 0
0 =
1 = Inactive
Active
40014 Overwrite value unsigned int. Output value in overwrite mode in % 0—100 50 50 = 50 %
40015 Output mode unsigned int. Selection of the output mode: Voltage / Current / PWM 0—2 0
0 =
1 =
2 = 0—10 VDC
0—20 mA
PWM
40016 PWM output unsigned int.
Selection of the PWM output type: Open collector (OC) /
Pull-up +12 VDC.
0—1 0
0 =
1 = Open collector
Pull-up +12 VDC
40017 Run / Stand-by unsigned int. Selection of Run / Stand-by mode 0—1 0
0 =
1 = Run
Stand-by
40018 Start output value unsigned int. Start value of the output signal. Active when steps number (40009) = 0. 0—100 20 20 = 2 VDC / 4 mA / 20 % PWM
40019 Reserved, returns 0
40020
Network Bus
Termination
Resistor (NBT)
unsigned int. Sets the unit as first or last unit on the line by connecting NBT resistor 0—1 0
0 =
1 = Disconnected (NBT open)
Connected (NBT closed)
Note: The holding registers can be managed via the following Modbus commands: “Read Holding Registers”, “Write Single Register” or “Write Multiple Registers”.
If you want to find out more about Modbus over serial line, please visit: http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
RDCV
RESIDENTIAL HVAC
CONTROLLER