Condition:New
Type:Logic ICs
Color classification:Dry contact isolation input active isolation input dry contact non iso
Purchase notice:
please note you want:
Dry contact non isolated input , dry contact isolation input , (default :active isolation input)
MB11DI 11 road input data acquisition module switch, can collect 11 dry or wet signal contact node (active or passive input), you can set the input common anode or common cathode, and automatically switch the polarity, no jumper switch. The 12 way switch signal data, through the RS485 interface output control interface for isolated RS485, using Modbus-RTU communication, directly adapt to PLC, DCS and the domestic various configuration software, etc.
The first chapter product introduction
A.Summary
MB11DI 11Switch input acquisition module, can collect 11 dry or wet signal contact node(active or passive input), you can set the input common anode or common cathode, and automatically switch the polarity, no jumper switch. The 12 way switch signal data, through the RS485 interface output control interface for isolated RS485, using Modbus-RTU communication, directly adapt to PLC, DCS and the domestic various configuration software, etc..
Signal acquisition, power supply, RS485 communication electrical signals isolated from each other, the effective suppression of all types of serial mode and common mode interference, but also to ensure that the module works reliably.
Two.Characteristic
1.Using Modbus-RTU protocol.
2.Signal acquisition, relay output, power supply, RS485 communication electrical signals isolated from each other.
3.RS485The communication signal output interface is protected by the overvoltage and overcurrent.
4.Input signal type and communication format can be set by software.
FivePower polarity protection.
6.The counter and frequency measurement function of the input signal,
1)General mode of operation: with the power meter numerical preset function, the count value is not saved.
2)Power down storage mode: the module power down after the count value, re power up the load before the count value.
3)Each channel is corresponding to a counter and a frequency counter, which can be used to count and measure the input signal at the same time.
4)Counting mode: forward cycle, reverse circulation, positive non cycle and reverse circulation.
7.Open signal setting
1)When set to the active input, a set of input signal can also be used as input for a total of yin and yang or input, do not need to set the jumper, the internal polarity reversal function.
2)When set to dry contact input, as long as the short signal to the signal to the public side of the signal. However, users need to specify when buying, open into a common or isolated (isolated from the price higher).
Three.Technical index
project | parameter |
Signal input | 1Input channel: 11 way dry contact or wet node switch input 2Signal type: common yin or Yang input polarity identification (limited group of the same polarity) 3Signal level: high level (30V ~ 10V) low level (0V ~ 1V) 4.Sampling rate: 3000HZ 5.Isolated voltage protection: 1500V |
Communication output | 1Communication protocol: MODBUS-RTU 2Interface type: isolated RS485 communication, the output of the interface using the overvoltage and overcurrent protection 3Baud rate: 1200BPS, 2400bps., 4800bps, 9600bps, 19200bps 38400bps57600bps, 115200bps. 4Check bit: no parity check, parity check 5. setting: module address, baud rate, parity bit is set up by the software 6Communication distance: 9600bps 1200 meters 7.Electrical isolation protection: 1500V |
Module size | A.Separate module size: 104mm*72mm*26mm B.With terminal and guide rail box size: 124mm*72mm*45mm |
Installation method | Standard DIN guide rail installation |
work environment | Temperature: -10 ~ +55 temperature humidity: 35~85% (not dew) |
Working power supply | 1Power supply voltage: 10V~30V wide range of power supply, with the power supply polarity protection 2Power consumption: less than 3W |
Four.Product appearance and external wiring diagram

Five.Module indicator lamp and switch function specification
1.POW/SET;Module working status indication
A.Green light: the module works in the running state. B. red light: the module is configured to write parameters, need to re power up.
2.TXD/RXD:Communication status indication
A.The green light flashes: the communication receives the data B. red light flashes: the module is sending data
C.The green light is always on: DATA+ and DATA- on the communication line RS485 line is connected to the reverse or the connection is broken.
3.Module right reset switch
1)When the communication parameters (module address, baud rate, parity bit) do not know or communication parameter misspecification, and can not establish contact module communication, the solution is to reset the communication parameters; we use the clip to hold the reset switch is not open, 5 seconds after the [POW/SET] module of the red indicator lights, release the reset switch, the communication the parameters have been reset, as long as the power supply module after the restart time, the communication parameters of the module has been reset.
2)Communication parameters after reset: Address: 1, baud rate: 9600bps, parity: No.
Six.Terminal definition
terminal | Name | Explain |
| terminal | Name | Explain |
1 | DI0 | Switch input channel 8 | 11 | DI0 | Switch input channel 0 |
2 | DI1 | Switch input channel 9 | 12 | DI1 | Switch input channel 1 |
3 | DI2 | Switch input channel 10 | 13 | DI2 | Switch input channel 2 |
4 | DI3 | Switch input channel 11 | 14 | DI3 | Switch input channel 3 |
5 | DGND2 | Channel 8, 9, 10, 11 common | 15 | DGND0 | Channel 0, 1, 2, 3 common |
6 | empty |
| 16 | DI4 | Switch input channel 4 |
7 | DATA+ | RS485Communication + | 17 | DI5 | Switch input channel 5 |
8 | DATA- | RS485Communication - | 18 | DI6 | Switch input channel 6 |
9 | +Vs | Power input + | 19 | DI7 | Switch input channel 7 |
10 | GND | Power input - | 20 | DGND1 | Channel 4, 5, 6, 7 common |
Seven.Principle block diagram

Eight.MODBUSRegister description
1.Module supports MODBUS function code
Code | Meaning | operation |
0x01H | Read more than one coil register | Read the values of one or more coil registers |
0x 02H | Read multiple input registers | Read one or more of the values of the open - in register |
0x03H | Read more than one hold register | Read one or more of the value of the register. |
0x05H | Write a coil register | Write the value of a coil register |
0x 06H | Write a single hold register | Write a data to hold register |
0x0FH | Write one or more coil registers | Write one or more of the value of the coil register |
0x 10H | Write more than one hold register | Write one or more data to the holding register |

