### 3A)

1:1

1:n

No. | Name | Note
--- | --- | ---
(1) | COM port conversion adapter by Pro-face CA3-ADPCOM-01 |
(2) | Terminal block conversion adapter by Pro-face CA3-ADPTRM-01 |
(3) | User-created cable • Connector Display side: Terminal Block External Device side: D-sub 25 pin (plug) |

NOTE

- Cable length: 1000m or less.

*1 Notation of RD(A'), RD(B'), SD(A) and SD(B) are different by the External Device.
Please refer to the manual of the External Device.
In addition, note that Class A and Class B are reversely named for the Display and the External Device.

*2 Insert the termination resistance of the External Device side. The 120 Ω termination resistance is inserted between RDA - RDB by connecting the 24th pin to the 25th pin of serial interface at the External Device side.

*3 FG of the External Device ground the D class grounding. Additionally, the FG connection to the shield, whether you connect from the External Device or from the Display, depends on your environment.