Modbus RTU 1 Channel Relay
This is a one channel Modbus RTU relay module equipped with stable 8-bit MCU and RS485 level communication chip, adopting standard MODBUS RTU format RS485 communication protocol. It can realize 2-bit input signal detection and provides a 2-bit relay output. It can be used for digital detection or power control occasions.
Quick Spec
- Model: GY18123
- Work Voltage: 7 ~ 12VDC
- Baud Rate: 4800/9600/19600bps (default 9600bps)
- Optocoupler Input Signal: 3.3 ~ 30VDC
- Set Address: 1 ~ 255
- Relay Control Mode: ON/OFF, Delay_ON, Delay_OFF mode
- Delay Time: 0 ~ 6553.5s
- Load: AC 250V 10A / DC 28V 10A
- Protocol: Modbus RTU
- Interface: RS485/TTL UART
- Control Channel: 1 channel
- Operating Temperature: -20 ~ +85°C
- Operating Humidity: 5% ~ 95%RH
- Module Size: 85 x 49 x 19mm
- Weight: 24g
Wiring Diagram
Modbus RTU Command
| No. | Command | Instruction | Return Value | Explanation |
|---|---|---|---|---|
| 1 | Set the address to 01 | 00 10 00 00 00 01 02 00 01 6A 00 | None | Modified to 01 |
| 2 | Set the address to 02 | 00 10 00 00 00 01 02 00 02 2A 01 | None | Modified to 02 |
| 3 | Set the address to 03 | 00 10 00 00 00 01 02 00 03 EB C1 | None | Modified to 03 |
| 4 | Read address | 00 03 00 00 00 01 85 db | 00 03 02 00 01 44 44 | 01 is the device address |
| No. | Instruction Explanation
(01 05 00 01 01 00 9d 9a) |
Command (Set No. 1 Relay) |
|---|---|---|
| 1 | 1st Byte: 01 | Device address |
| 2 | 2nd Byte: 05 | Function code |
| 3 | 3rd, 4th Byte: 00 01 | Represents the register address |
| 4 | 5th,6th Byte: 01 00 | Register data |
| 5 | 7th,8th Byte: 9d 94 | CRC check |
| No. | Command | Instruction |
|---|---|---|
| 1 | Relay 0 turns ON | 01 05 00 00 FF 00 8C 3A |
| 2 | Relay 0 turns OFF | 01 05 00 00 00 00 CD CA |
| 3 | Read relay status 0 | 01 01 00 00 00 01 FD CA |
| 4 | Read all relay status | 01 01 00 00 00 08 3D CC |
| 5 | Relay 0 flip | 01 05 00 00 55 00 F2 9A |
| 6 | All flip instructions | 01 05 00 00 5A 00 F7 6A |
| No. | Command | Instruction | Return Value | Explanation |
|---|---|---|---|---|
| 1 | Relay 0 Instantaneous trigger | 01 05 02 00 07 00 CE 42 // 700MS = 7*100MS |
01 05 02 00 07 00 CE 42 // 700MS = 7*100MS |
Address 1 |
| 2 | Relay 1 Instantaneous trigger | 01 05 02 01 08 00 9A 72 // 800MS |
01 05 02 01 08 00 9A 72 // 800MS |
Address 1 |
| 3 | Relay 0 Instantaneous trigger | 02 05 02 00 05 00 CF 11 // 500MS |
02 05 02 00 05 00 CF 11 // 500MS |
Address 2 |
| 4 | Relay 1 Instantaneous trigger | 02 05 02 00 06 00 9E 21 // 600MS |
02 05 02 00 05 00 9E 21 // 600MS |
Address 2 |
| 5 | Completely destroyed | 01 0F 00 00 00 08 01 00 FE 95 | -- | -- |
| 6 | Completely destroyed | 01 0F 00 00 00 08 01 FF BE D5 | -- | -- |
Resources
Shipping List
- 1 x Modbus RTU 1 Channel Relay
Modbus RTU 1 Channel Relay
- Brand: Generic
- Product Code: MOD-RTU-REL
- Weight: 0.025kg
- Product Status : Active
Stock
| Warehouse | Stock Status | Location |
|---|---|---|
| Centurion | In Stock | FD197 |
| Stellenbosch | No Stock |
We ship free of charge between branches to complete your order.
-
R115.00 (Inc Tax: R132.25)
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Tags: modbus, rtu, 1 channel, relay, single channel, 1 way, gy18123, 12v, 8bit- 8 bit, rs485, ttl, uart