# TCC Module

URL: https://irs.systems/en/docs/ltt/documentation/ltt-gui-manual/configuration/moduleconfiguration/tcc

The standard TCC module is a **NI PCI-6503** 24 channel digital in/out card. The 24 channels are grouped by 3 ports á 8 lines. This card is also used for the [UPS](../UPS/). For the TCC port 0 / lines 0 - 7 is used. For the UPS port 1 / line 0 is used.

A temperature chamber contact module has the following mandatory standard parameters:

| Parameter    | Meaning                                                                                                                             | Examples                |
| ------------ | ----------------------------------------------------------------------------------------------------------------------------------- | ----------------------- |
| Resource     | The connection information needed to connect to this device.                                                                        | cDAQ1Mod1/port0/line0:7 |
| Inverted     | Indicated whether the digital inputs are inverter or not. The standard LTT TCC hardware has inverted inputs.                        | true / false            |
| LastSimValue | This parameter is used by the simulation driver to store the last simulated value. You change this value via the TCC control panel. | 1                       |

> You can access a TCC control panel through [GUI](/en/docs/ltt/documentation/ltt-gui-manual/lttgui/hwcontrol/tcc-control-gui) and also via [TestStand](/en/docs/ltt/documentation/ltt-gui-manual/teststand/hardware-control).