Modbus ASCII Advanced
Use this driver instead of the Modbus ASCII driver when multiple stations are connected to the RS-485 bus. The Station ID setting can be customized at the tag level with this driver. The device connection status is defined by the last received response.
Review the following information for setting up and configuring the Modbus ASCII Advanced driver.
Compatibility parameter | Compatible items |
|---|---|
Driver type | Serial (RS-485) |
When to use | Serial connection to a device using Modbus ASCII |
To set up and configure this device in Litmus Edge, you will need to do the following:
- Step 1: Set up and Configure the PLC Device
- Step 2: Set up the PLC Device in Litmus Edge DeviceHub
- Step 3: Configure the List of Registers
Parameter | Value |
|---|---|
Type | Modbus |
Driver | Modbus ASCII Advanced |
Device File | The file of the serial port you are using |
Baud Rate | Select one of the following:
|
Data Bits | |
Parity | Select even, none, or odd |
Stop Bits | 1 |
Zero-Based Addressing | Select Enable or Disable |
Delay Between Polls | 0 |
Name | Value Types | Address Format | Min Address | Max Address | Description |
|---|---|---|---|---|---|
D | bit | DDDDD | 0 | 65535 | Discrete Input Contacts |
C | bit | DDDDD | 0 | 65535 | Discrete Output Coils |
H | uint16, int16, int32, uint32, float32, float64 | DDDDD | 0 | 65535 | Analog Output Holding Registers |
I | uint16, int16, int32, uint32, float32, float64 | DDDDD | 0 | 65535 | Analog Input Registers |
H_bit | bit | DDDDDdd | 0 | 6553515 | Analog Output Holding Registers |
I_bit | bit | DDDDDdd | 0 | 6553515 | Analog Input Registers |