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DI/DO card is connected to the video capture card and is used for connecting guard loops (sensors), relays and in some cases analog sensors to the control system - the server with installed Axxon PSIM™ software. General information about sensors and relays is given in the table:
Type of device | Description | Functions | Operation conditions | Changes in operation condition | Examples of devices |
Sensor | Interface line of external sensor and control system | Informs the control system about changes in sensor status | Closed– logical one Open – logical zero | Opening/closing – when sensor detects the alarm | Annunciators (smoke, heat, window, etc), button |
Relay | Interface line of control system and executive device | Changes operation condition of executive device on command from the control system | Closed – logical one Open – logical zero | Opening/closing – on command from the control system. | Annunciators (light, sound, etc.), mechanized gates |
| Analog sensor | Interface line of external sensor and control system | Informs the control system about changes in sensor status | - | In analog (continuous) mode. | Temperature, humidity, pressure, etc. sensors |
Electrical and technical specifications of some Sensor-Relay cards are given in Appendix 5. Electrical and technical specifications of Sensor-Relay cards section. For the most up-to-date information on the characteristics and connection of the Sensor-Relay cards, please see the manufacturer's documentation.
Some of the Sensor-Relay cards are integrated with Axxon PSIM via Drivers Pack. See Drivers Pack documentation for the full list of such cards.
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