Delta AX-3 Series, Operation Manual, Page: 327 / 370

C h a p t e r 9 C o m m u n ic a t i o n
9 - 1 7
9_
Item Description
Device
Type
Standard Modbus Device Delta Series Device
Enable Activates this channel
Name Defines this channel name
Access
Type
Modbus function code

Read coils (0x01)

Read discrete inputs (0x02)

Read holding registers (0x03)

Read input registers (0x04)

Read single coil (0x05)

Write single register (0x06)

Write multiple coils (0x0F)

Write multiple registers (0x10)

Read/Write multiple registers (0x17)
Read/Write Registers

Read coils

Read registers

Write coils

Write registers
Note: PLC uses the corresponding Modbus
function code according to the read/write
register of the device type.
Trigger

Cyclic: The request occurs periodically.

Rising edge: The request occurs as a
reaction to a rising edge of the Boolean
trigger variables. The trigger variable is
defined in the tab I/O Mapping.

Application: The Modbus request is
triggered by DFB_ModbusComChannel

Cyclic: The request occurs periodically.

Rising edge: The request occurs as a
reaction to a rising edge of the Boolean
trigger variables. The trigger variable is
defined in the tab I/O Mapping.

Application: The Modbus request is
triggered by DFB_ModbusComChannel
Comment
Description of the channel
Device
Address
Modbus protocol address
Delta register address (will be converted into
Modbus protocl in the background)
Length
Number of the register to be read/written to.
(up to 100 coils and 100 registers) Number of the register to be read/written to.
(up to 256 coils and 100 registers)
Error
Handling
What to do with the data in case of a communication error:

Set To ZERO

Keep last value