[Type d'acquisition]：analogique
[Plage d'acquisition]： 0 à 20 mA
[Type d'interface]： RS485
[Canaux d'acquisition]：4
[Dimensions]：108 x 75 x 37 mm
[Poids]：225 ± 5 g
[Introduction]：La série E820-AIO est notre gamme d'acquisition de signaux analogiques. Elle utilise le réseau de communication RS485 pour transmettre les signaux analogiques des points de données dispersés à l'hôte via une conversion analogique-numérique ou pour contrôler le site principal distant via un PC. Elle est dotée d'une sécurité de surveillance (réinitialisation de 0,2 s) et ne présente aucun risque de panne. Le produit est traité avec trois protections anti-peinture : anti-moisissure, anti-humidité et anti-brouillard salin.
| Foot number | name | Function | illustrate |
| 1 | DC_IN | Press-wire power input positive terminal | Power input terminal, range: DC5~36V , recommended 12V , 24V |
| 2 | GND | Press-wire power input negative pole | Power GND |
| 3 | AGND | Communication common area | RS485 communication common ground terminal |
| 4 | RS485_A | RS-485 Interface A | RS-485 interface A is connected to device A interface |
| 5 | RS485_B | RS-485 interface B | RS-485 interface B is connected to device B interface |
| 6 | AI1+ | Analog signal input channel 1 positive | Analog signal input pin, forming an input with GND1 pin |
| 7 | AI1- | Analog signal input channel 1 negative | with V I1+ Used in pairs |
| 8 | AI2+ | Analog signal input channel 2 positive | Analog signal input pin, with GND 2 pin forming an input |
| 9 | AI2- | Analog signal input channel 2 negative | with V I2+ Used in pairs |
| 10 | AI3+ | Analog signal input channel 3 positive | Analog signal input pin, forming an input with GND3 pin |
| 11 | AI3- | Analog signal input channel 3 negative | with VI3 + Used in pairs |
| 12 | AI4+ | Analog signal input channel 4 positive | The analog signal input pin forms an input with the GND4 pin |
| 13 | AI4- | Analog signal input channel 4 negative | with VI4 + Used in pairs |
| 14 | GND | Power output negative pole | Negative pole of power output, internally connected to pin 2 |
| 15 | Vout | Power output positive | Power output positive pole, internally connected to pin 1 , Max: 2A |
| 16 | Reset | Parameter reset button | Long press to reset the device parameters to factory settings. If reset is successful, the L1 and L2 indicators will flash once. |
| 17 | Grounding column | Grounding column | Device connected to the ground |