Content

• 1.0 Purpose
• 1.1 Wiring
• 1.2 Configuration

1.0 Purpose

The purpose of this document is to show users how to wire and configure two inputs instead of one with a Caddis device. If a piece of equipment has multiple stages that must occur during a cycle in order for that cycle to be considered complete, the Caddis device can be set up to monitor those signals.

1.1 Wiring

A wiring diagram is provided here is for connecting two 24 VDC signals to the Caddis device. A quick version of the pinout for the M12 input cable is given below, but readers are encouraged to also review the wiring diagram.

• Blue Wire (#3) – Ground/0 VDC, needs to be common between the power supply, the Caddis inputs, and the machine ground.
• White Wire (#2) – First input signal, which must be provided with +24 VDC (high) and 0 VDC (low). The ground (blue wire above) is shared with the second input.
• Black Wire (#4) – Second input signal, which must be provided with +24 VDC (high) and 0 VDC (low). The ground (blue wire above) is shared with the first input.

Once the wiring is complete, follow the instructions for getting a new Caddis device online before trying to configure the device.

1.2 Configuration

Once the wiring is complete and the device is assigned to a piece of equipment (done in section 1.1), the inputs need to be configured through the Caddis web application. Find the equipment that the device is attached to and click on it. In the right sidebar, there will be a Devices entry that can be expanded down. Expanding the Devices entry will reveal an edit icon for the device that has been attached to the equipment. Click on the Edit (Pencil) icon to edit the settings for the device.

Figure 1.2.1 – Devices Entry in Right Sidebar and Edit Device Button

The Edit device dialog should open, and it should be possible to click the Edit (Pencil) button to the right of the Input Config setting.

Figure 1.2.2 – Edit Input Config button on Edit device dialog

Clicking the Edit button will open another dialog box titled Edit Input Config. This dialog has multiple parts that are highlighted below.

Figure 1.2.3 – Annotated Edit Input Config Dialog Box

1. Type – The drop down menu associated with this section has two options: Sustained and Pulsed. When a signal is Sustained, it is on during the entire cycle. When a signal is Pulsed, it turns on and off once per cycle, usually rapidly (> 1 seconds and < cycle length). The information icon next to the drop down gives an explanation of the two signal types.
2. Input #1 – This section has multiple controls, which will be covered left to right. The first control sets which physical input on the Caddis device will be treated as the first input that the system will monitor. The options are 24v #1, 24v #2, 120v #1 and 120v #2. This should be set according to the way you have the Caddis device wired. The second drop down sets how the state of the signal should be interpreted. When this is set to High = Running, a high/on signal from the equipment will be taken as a sign that a cycle has occurred and/or that the equipment is running. If it is set to Low = Running, a low/off signal from the equipment will be taken to mean that a cycle has occurred and/or that the equipment is running. The last control is a checkbox labeled Filter Flashing Inputs, which allows handling inputs that turn on and off multiple times during the cycle. An example of this is a stacklight that flashes green when the machine is running. This checkbox allows the user to set a delay so that the flashing of the light will be ignored, and the stacklight will be treated as solid green.
3. Add Input – This button allows the user to add another input to be monitored along with the first input. This is sometimes required for more complex setups, and we will return to this button soon.
4. Info – This text field gives a plain-language interpretation of how the input(s) are configured to make it easier to understand how the Caddis device is going to interpret the input configuration.

Since this document is about using dual 24 VDC inputs, the Add Input button (#3 above) should be clicked to add a second input configuration. A sample configuration is shown below, with the logical operator highlighted.

Figure 1.2.4 – Logical Operator When Using Multiple Inputs

There are two options for the logical operator:

• And – Both inputs need to be activated at the same time for the Caddis device to register the input.
• Or – At least one, but not both, inputs must be activated for the Caddis device to register the input.

Please Note – It is possible to configure the inputs in such a way that the Caddis device will miscount cycles. For instance, setting the input type to Pulsed and setting Or between two inputs will cause two cycles to be counted when only one occurs, but only when the two inputs are activated in a pattern that does not overlap. In other words, if the two input signals are pulsed at different times during the same cycle, that cycle will be registered as two separate cycles by the Caddis device. There is no way for the device to know that the two pulsed signals are part of the same cycle unless they coincide in some way.

One last thing to note about this dialog is the minus icon to the left of the logical operator drop down. This allows the user to remove the input just below the icon and revert the input configuration to a single, rather than a dual, input setup.

Clicking the Ok button on this dialog will save the configuration and update the Caddis device. If configured correctly, the device should now be prepared to monitor multiple input signals at the same time.