IDEC High Performance Series - Manual (Page 240)

Chapter 2
222
External Device Setup Manual
5.3 Connection Diagram
The connector types given in the Connection Diagrams are for the unit and not the cable. For details regarding wiring, refer
to Chapter 1 "3 Important Points Regarding Wiring" on page 19.
5.3.1 Connection Diagram 1: S7-200 (RS485) to MICRO/I
D-sub, 9P socket connector (plug type) D-sub, 9P connector plug type
- It is also possible to connect multiple PLCs and multiple MICRO/Is on the same network.
- Please short-circuit the RDA and SDA of MICRO/I and connect to SIG-B of PLC.
- Please short-circuit the RDB and SDB of MICRO/I and connect to SIG-A of PLC.
- Refer to S7-200 manual for restrictions when using multi-drops.
- When using multiple PLCs to communicate to multiple MICRO/Is, it will take extra time to establish communication
between PLCs and OIs.