Type:Logic ICs
Condition:New
Color classification:Open (active input) open (dry contact input)
Chapter 1 product introduction
One Summary
MB22DI4RO 22The circuit switch input acquisition module and 4-way relay output module can collect 22 trunk or wet node signals (active or passive input); as dry contact input or sensor input (NPN or PNP), jumper common positive or negative input can be set; as active input, polarity automatic conversion does not need jumper switch; The circuit relay can be controlled by MODBUS bus; the module adopts Modbus-RTU communication, and can directly adapt to PLC, DCS and various domestic configuration software.
Open-in signal acquisition, relay output, power supply and RS485 communication electrical signals are isolated from each other, effectively suppressing all kinds of serial mode and common mode interference, and ensuring the reliable operation of the module.
Two. Characteristic
1. The Modbus-RTU protocol is adopted.
2. Signal acquisition, relay output, power supply, RS485 communication, electrical signals are isolated from each other.
Three RS485The communication signal output interface adopts over voltage and over current double protection.
4. The input signal type and communication format can be set by software.
Five Power polarity protection.
Six Open signal setting
1) When set to active input, the open signal can be input for both common-yang and common-yin at the same time. There is no need to set jumpers anymore, and the internal has Polar flip function.
2) When the input is set to dry contact, the short end signal ends to the common end of the signal. However, when users purchase, they need to indicate whether they are open or segregated.
Three. Technical indicators
| project | parameter |
| Signal input | 1Input channel: 22 trunk contact or wet node switch input. 2Signal type: automatic identification of common negative or common input polarity. 3Signal level: high level (10V ~ 30V) low level (0V ~ 3V) 4. Sampling rate: 1000HZ FiveIsolated voltage protection: 1500V |
| signal output | 1Output channel: 8 way normally open relay output. 2Load capacity: resistive load 250V/10A inductive load 250V/3A FiveIsolated voltage protection: 1500V |
| Communication output | 1Communication protocol: MODBUS-RTU 2Interface type: isolated RS485 communication, output interface adopts over voltage and over current double protection. 3Baud rate: 1200BPS, 2400bps, 4800bps, 9600bps, 19200bps. 4Check bit: no check, parity check, odd check. 5Setting mode: module address, baud rate, parity bit through software settings. 6Communication distance: 9600bps 1200 meters. SevenElectrical isolation protection: 1500V |
| Module size | Single module size: 145mm*90mm*40mm |
| Installation method | Standard DIN guide rail installation |
| work environment | Temperature: -10 ~ +55 C humidity: 35~85% (no condensation). |
| Working power supply | 1Power supply voltage: 10V~30V wide range of power supply, polarity protection with power supply 2Power consumption: less than 5W |
Four. Product appearance
Five. Module peripheral wiring diagram
1. Switch input wiring instructions
2. Relay output connection
3. Communication and power connection
Six. Module indication light and switch function description
1. POW/SET;Module work status indication
A.Green lights: modules are working. B. red light: module has configuration parameter to write, need to power up again.
2. TXD/RXD:Communication status indication
A.Green light: communication receives data B. red light flashes: module is sending data.
C.The green light is always bright: the communication RS485 line on DATA+ and DATA- is reversed or the connection is broken.
3. Module right reset switch
1) When the communication parameters (module address, baud rate, check bit) are not known or the communication parameters are misplaced, the solution is to reset the communication parameters. Five seconds later, the module [POW/SET] red indicator lights on and the reset switch is opened. At this time, the communication can be achieved. The parameters have been reset, so long as the power supply of the module is powered off and restarted once, then the communication parameters of the module have been reset.
2) After the reset, the communication parameters are: 1, baud rate: 9600bps, check bit: none.
Seven. Principle block diagram
The second chapterModbusRegister and communication protocol specification
1. MODBUSRegister specification
1. Module supported MODBUS function code
| Register type | Address range | Function code | Functional code specification |
| Coil register | 00001-00004 | 0x01H | Read one or more coil registers. |
| 0x05H | Write a coil register. |
| 0x0FH | Write one or more coil registers. |
| Input register | 10001-10006 | 0x02H | Read one or more open registers. |
| Input register | 30001-30008 | 0x04H | Read one or more input registers. |
| Hold register | 40001-40176 | 0x03H | Read one or more holding registers. |
| 0x06H | Write a data to hold register. |
| 0x10H | Write one or more data to hold register. |
2. Register definition description
1) Coil register (0x01H,0x05H,0x0FH)
| address | parameter | read/write | minimum value | Maximum value | Explain |
| 00001 | RO0 | Read and write | 0 | 1 | Relay output0 |
| 00002 | RO1 | Read and write | 0 | 1 | Relay output1 |
| 00003 | RO2 | Read and write | 0 | 1 | Relay output2 |
| 00004 | RO3 | Read and write | 0 | 1 | Relay output3 |
2) Discrete input register(0x02H)
| address | parameter | read/write | minimum value | Maximum value | Explain |
| 10001 | DI0 | read-only | 0 | 1 | Switch input channel0 |
| 10002 | DI1 | read-only | 0 | 1 | Switch input channel1 |
| 10003 | DI2 | read-only | 0 | 1 | Switch input channel2 |
| 10004 | DI3 | read-only | 0 | 1 | Switch input channel3 |
| 10005 | DI4 | read-only | 0 | 1 | Switch input channel4 |
| 10006 | DI5 | read-only | 0 | 1 | Switch input channel5 |
| 10007 | DI6 |
