Omron C200HE ユーザーズマニュアル

Host Link communications are used to transfer data between the PC and a host
computer (a personal computer or PT). It is possible to monitor the PC’s operat-
ing status and the contents of PC data areas from the host computer using Host
Link commands. It is also possible to transfer data from the PC’s IOM data areas
(IR area, SR area, LR area, HR area, AR area, timer and counter PVs, DM 0000
through DM 6143, and EM 0000 through EM 6143) to a host computer using the
TXD(––) instruction in the ladder program.

RS-232C Connections (1-to-1) Only one PC can be connected with the host computer (one-to-one connection)

when the Host Link is made with RS-232C connections.

Host Link

Host Link

Host
computer

Host
link

IBM PC/AT or compatible

Up to 32 PCs can be connected with the host computer (one-to-N connection)
when the Host Link is made with RS-422/485 connections.

Host link

32 PCs max.

IBM PC/AT or compatible

See
note

RS-232C 

↔

 RS-422/485 Adapter

See
note

See
note

See
note

Use the wiring diagram shown below as a guide in wiring the port to the external
device. Refer to documentation provided with the computer or other external de-
vice for wire details for it.