Moxa ioLogik 2542 [19/88] Daisy chaining for i o expansion

ioLogik 2500 Series Installation

2-5

Daisy-Chaining for I/O Expansion

Up to 8 ioLogik E1200 devices can be connected in a daisy chain configuration to the ioLogik 2500 via the

L1/Slave port on the ioLogik 2500. An IOxpress configuration scheme is called a project. If the IOxpress

project includes expansion devices, the ioLogik 2500 will automatically start running in expansion mode.

If the ioLogik 2500 is running, you can replace one of the expansion units without powering down the

ioLogik 2500. Take the following steps to replace an expansion unit:

1. Power-off the expansion unit.

2. Replace the unit with another expansion unit of the same model.

3. Access the DIP switch beneath the cover plate (as shown below).

4. Move the DIP switch from the down position to the up position to trigger the ioLogik 2500 to refresh its

connection with the expansion units. If the DIP switch is already in the up position, move it down and

then back up again.

5. The expansion unit will start running.

You may also use the ioLogik 2500’s web console to reconnect the expansion units.

NOTE

Expansion units must be replaced with the same model of expansion unit. If you would like to use a

different expansion unit model, you must first change the relevant

IOxpress settings.

The following figure illustrates a simple daisy-chain of I/O modules using the ioLogik 2500 for wireless

connectivity.

ioLogik 2500 ioLogik E1200 ioLogik E1200 ioLogik E1200 ioLogik E1200 ioLogik E1200

When daisy

-chaining an array of devices, the

first device in the chain (after the ioLogik 2500)

must be connected to the L1 Slave port on the

top of the ioLogik 2500 (outlined in red in the

diagram).