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Machine I/O (44W HDD socket)
The machine I/O socket is used to provide connections for the CMM input / output. The cable needs to be created by the CMM installer using the pin out guide below. The connector for the machine I/O socket is provided within the UCC MMI-2 kit.
| Pin | Function | Pin | Function |
|---|---|---|---|
| 1 | External I/O +24 V | 23 | Reserved |
| 2 | /Enable air solenoid/ (active low) | 24 | Reserved |
| 3 | Reserved | 25 | Reserved |
| 4 | Reserved | 26 | Reserved |
| 5 | Reserved | 27 | Reserved |
| 6 | Uncommitted output 0 | 28 | Reserved |
| 7 | Uncommitted output 1 | 29 | Reserved |
| 8 | Uncommitted output 2 | 30 | Reserved |
| 9 | Uncommitted output 3 | 31 | Reserved |
| 10 | Uncommitted output 4 | 32 | Reserved |
| 11 | Uncommitted output 5 | 33 | Reserved |
| 12 | Uncommitted output 6 | 34 | Reserved |
| 13 | Uncommitted input 0 | 35 | Reserved |
| 14 | Uncommitted input 1 | 36 | Reserved |
| 15 | Uncommitted input 2 | 37 | 0 V |
| 16 | Uncommitted input 3 | 38 | Reserved |
| 17 | Uncommitted input 4 | 39 | Reserved |
| 18 | Uncommitted input 5 | 40 | Reserved |
| 19 | Reserved | 41 | Reserved |
| 20 | Reserved | 42 | Reserved |
| 21 | Reserved | 43 | Reserved |
| 22 | Low air pressure | 44 | 0 V |
| Shell | Screen |
All input pins
The inputs are activated by being pulled down to 0 V. They are not opto isolated and are pulled up to +24 V by a 10 kΩ resistor within the UCC MMI-2. These inputs can accept signal levels in the range of +5 V to +24 V, and need to be pulled below 1.5 V to signify the active state. The input pin must be driven above 4.2 V, or left open circuit, to signify the inactive state.
WARNING: The input pins must not be driven above External I/O +24 V.
All output pins
The open drain output with a 10 kΩ pull-up resistor to external I/O +24 V is suitable for driving devices in the range +5 V to +24 V and can sink a maximum current of 200 mA. If the output is not required, then it should be left as an open circuit.
WARNING: The output pins are not suitable for direct connection to circuits operating above External I/O +24 V.
External I/O +24 V
External I/O +24 Vdc supply is provided for use with the I/O equipment. Maximum current 1 A (1000 mA).
NOTE: All I/O peripherals should typically be supplied from the +24 V I/O pin, however if supplied externally, the voltage must be in the range 0 V to 24 V and the current must not exceed 200 mA.
Enable air solenoid
An active low signal to engage an air solenoid.
Uncommitted inputs
These input pins can be configured to the customer's requirements via the UCCsuite software.
Uncommitted outputs
These output pins can be configured to the customer's requirements via the UCCsuite software.
Low air pressure
The low air pressure signal should be connected to a suitable air pressure switch. This input is monitored by the controller and when activated a system fatal fault is logged. During the commissioning process it is possible to invert this signal from an active low signal to an active high signal. If this capability is not required for integration to the system then the signal should be connected to the 0 V or inverted during commissioning.
0 V
This is the 0 V reference for all of the I/O signals.