Specifications

Connect the EX-A1 Communication Cable Minimizing EMI: System Design Guidelines
12 VisiLogic: Getting Started
1. If the power-supply is closer to the EX-A1 than it is to the PLC:
- Install and connect the power-line filter as close as possible to the EX-
A1. The maximum wire length is 10 cm. Please refer to the filter
manufacturer documentation for installation information.
- Create 0V and 24V junctions at the EX-A1 respective terminals (see the
following figure) and directly connect the EX-A1 main supply lines to the
PLC.
- Split the supply lines at the EX-A1 terminals and continue daisy-chaining
them to the expansion I/O units.
Please ensure that the wire segment which carries the 0V between
the EX-A1 and the PLC does not branch.
When the power-supply is near the EX-A1, connect the EX-A1 first as
shown in the next figure.
Connect the EX-A1 Communication Cable
1. Note that the communication cable is ended by RJ45 plugs. The plug
comprising a yellow-green grounding wire must be connected to the PLC
as shown in the following figure.
2. This yellow-green wire must be grounded to the metal door panel or
cabinet body (which must be also well grounded) using a screw. There
cannot be any paint or other non-conductive coating between the wire