Modbus Functions; Modbus Configuration; Modbus Parameters - Sw3 - Trane PIC Installation Operation Maintenance/ Programming

Modbus parameters - SW3

Table 17 - SW3 - Modbus configuration
Serial Type
Parity Check
Baudrate
BAS-SVX08D-E4
Operation

Modbus Functions

Function 2: Read n bits
Inputs are addressed starting at zero: input 10001 is addressed as 0.
Function 4: Read n analog values
Registers are addressed starting at zero: register 30001 is addressed as 0.
Function 5: Write a bit
Function 15: Write n bits
Coils are addressed starting at zero: coil 00001 is addressed as 0.
Function 6: Write a remote setpoint
Function 16: Write n remote setpoints
Registers are addressed starting at zero: register 40001 is addressed as 0.

Modbus Configuration

There are 2 blocks of dip switches dedicated to Modbus configuration.
Dip switch block SW3: Serial Type, Parity, Baudrate
Dip switch block SW4: Modbus slave address
1
RS232 ON
RS485 OFF
None OFF
Odd ON
Even OFF
1200
2400
4800
9600
14400
38400
57600
CONFIGURATION
SW1 SW2 SW3 SW4
2 3 4
OFF
ON
ON
OFF
ON
OFF
ON
OFF
OFF
ON
1
2
3
4
5
6
7
8
SW3
OFF
5 6 7
OFF OFF
Reserved
OFF OFF
ON OFF
ON OFF
OFF ON
ON ON
ON ON
1
2
3
4
5
6
7
8
SW4
ON
8
47