### Setting of External Device

For External Device communication settings, use the DIP switch of the front of the Serial Communication unit and ladder software (CX-Programmer).

Refer to your External Device manual for details.

##### DIP Switch Setting

Setup Items | Setup Description
--- | ---
Unit No. Setting Rotary Switch*1 | 0
WIRE (2wire/4wire switch) | 4wire
TERM (Termination resistance switch) | ON

*1You need to set this switch to the same value as "CPU High Function Unit No." of the serial communication unit in the I/O table assigned by the ladder tool.

##### Ladder Software Settings

For communication settings of the communication unit, you need to register the serial communication unit to be used by the ladder software in advance.

After registration, open [I/O Table] of the ladder software. Click [Switch] from the menu displayed by right-clicking [Serial Communication Unit] and set as below.

Setup Items | Setup Description
--- | ---
Displayed Parameter | Port1:Host Link Settings*1
Port settings*2 | User settings
Serial communication mode | Host Link(default)
Data length | 7 bits
Stop bits | 2 bits
Parity | Even
Baud rate | 19200bps
Send delay | Default(0ms)
Send delay(user-specified) | 0
CTS Control | No
1:N/1:1 protocol setting | 1:N protocol
Host Link compatible device mode | Default(Mode A)
Host Link unit number | 0

*1When you set the Port2, select "Port2: Host Link Settings".

*2[Port settings] can be set only when the ladder software you use is a CX-One.

NOTE

- For access beyond network, set as below.

  Setup Items | Setup Description
  Source Network Address*1 | Option
  Node Address Setting Rotary Switch*2 | Option

*1Set in the routing table of "CX-Net Network Configuration". Please refer to the manual of the External Device for more details.

*2Set with the rotary switch on the front of the Controller Link unit used for access beyond network.

- Do not set the duplicate node address in the same network address group.