[Introduction]:M31 series distributed IO host supports Modbus TCP protocol and Modbus RTU protocol for acquisition control. The device supports simultaneous access by 5 clients and supports function codes 01/02/03/04/05/06/15/16. The product adopts an scalable design in structure. During use, if the user finds that the current device has some functions When the needs cannot be met, you can select the corresponding IO expansion modules according to the missing functions and splice them together to achieve the functions. There is no need to purchase the whole machine. This saves costs and facilitates customers to access the current on-site environment; the modules are self-contained. With status diagnosis function, it can monitor the communication status of IO modules in real time; it can support a maximum of 16 IO expansion modules.
Symbol | name | Function/Description |
DI1 | Dll switch input | Dll switch input interface, used in conjunction with COMA |
DI2 | DI2 switch input | DI2 switch input interface, used in conjunction with COMA |
DI3 | DI3 switch input | DI3 switch input interface, used in conjunction with COMA |
DI4 | DI4 switch input | DI4 switch input interface, used in conjunction with COMA |
COMA | DI switch input common terminal | DI1-DI4 share the COMA common port |
DI5 | DIS switch input | DI5 s-witch input interface, used in conjunction with COMB |
DI6 | DI6 switch input | DI6 switch input interface, used in conjunction with COMB |
DI7 | DI7 switch input | DI7 switch input interface, used in conjunction with COMB |
DI8 | DI8 switch input | DIS switch input interface, used in conjunction with COMB |
COMB | DI switch input common terminal | DI5-DI8 share the COMB public terminal |
DOI | DOI switch output | DOI switching output interface, used in conjunction with COMC |
DO2 | DO2 switch output | DO2 switching output interface, used in conjunction with COMC |
DO3 | DO3 switch output | DO3 switching output interface, used in conjunction with COMC |
DO4 | DO4 switch output | DO4 switching output interface, used in conjunction with COMC |
DOS | DOS switch output | DO5 switching output interface, used in conjunction with COMC |
DO6 | DO6 switch output | DO6 switching output interface, used in conjunction with COMC |
DO7 | DO 7 switch output | DO7 switching output interface, used in conjunction with COMC |
DO8 | DO8 switch output | DO8 switching output interface, used in conjunction with COMC |
COMC | COM side ofDO | DOI-DOS share COMC and use together |
Reload | Factory reset auto-negotiation | Press and hold for 5-10 seconds to restore factory settings: J p • double-click within 2 seconds to automaticaJlv negotiate the J ・ expansion module |
A(RS485) | RS485 A interface | RS485 A interface |
B(RS485) | RS485 B interface | RS485 B interface |
G(RS485) | RS485G interface | RS485G interface |
PE | ground | ground |
V-(DC9-36V) | Negative pole of power supply | DC (9-36V) power supply negative interface |
V+ (DC9-36V) | Positive pole of power supply | DC (9-36V) power supply positive interface |
LAN1 | Network port | Standard RJ45 network cable interface |