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GAXAX4040 4DI+4DO Distributed Remote IO module
[Introduction]：The distributed IO expansion module adopts an scalable design in structure and needs to be used with our M31 series distributed IO host.
| Symbol | name | Function /Description |
| Dll | Dll switch input | Dll switch input interface, used in conjunction with COM1 |
| COM1 | COM terminal of Dll | COM terminal of Dll |
| DI2 | DI2 switch input | DI2 switch input interface, used in conjunction with COM2 |
| COM2 | COM side ofDI2 | COM2 end ofDI2 |
| DI3 | DI3 switch input | DI3 switch input interface, used in conjunction with COM3 |
| COM3 | COM side ofDI3 | COM side ofDI3 |
| DI4 | DI4 switch input | DI4 switch input interface, used in conjunction with COM4 |
| COM4 | COM side ofDI4 | COM side ofDI4 |
| DOI | DOI switch output | DOI switching output interface, used in conjunction with COM1 |
| COM1 | COM terminal of DOI | COM terminal of DOI |
| DO2 | DO2 switch output | DO2 switch output interface, used in conjunction with COM2 |
| COM2 | COM terminal of DO2 | COM terminal of DO2 |
| DO3 | DO3 switch output | DO3 switching output interface, used in conjunction with COM3 |
| COM3 | COM terminal of DO3 | COM terminal of DO3 |
| DO4 | DO4 switch output | DO4 switching output interface, used in conjunction with COM4 |
| COM4 | COM terminal of DO4 | COM terminal of DO4 |
| VO+ | Power output positive pole | The positive pole of the power supply output is the same as the power supply voltage of the device. |
| VO+ | Power output positive pole | The positive pole of the power supply output is the same as the power supply voltage of the device. |
| VO- | Power output negative pole | The negative pole of the power supply output is the same as the power supply voltage of the device. |