wiki:20_rdc_charger:15_hardware:22_wm-1
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wiki:20_rdc_charger:15_hardware:22_wm-1 [2023/03/31 10:07] – removed - external edit (Unknown date) 127.0.0.1 | wiki:20_rdc_charger:15_hardware:22_wm-1 [2023/05/26 13:04] (current) – external edit 127.0.0.1 | ||
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+ | ====== Wireless Modbus-to-Modbus bridge ====== | ||
+ | **Wireless Modbus-to-Modbus bridge** | ||
+ | |||
+ | <WRAP column 350px> | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | </ | ||
+ | |||
+ | <WRAP column 300px> | ||
+ | |||
+ | | Model number: ^ WM-1 | | ||
+ | | Frequency: | ||
+ | | Dimensions: | ||
+ | |||
+ | ===== Applications ===== | ||
+ | |||
+ | * Replacement for RS485 wiring solution with wireless. Optimal for long range Modbus RTU serial communications with half duplex configuration. | ||
+ | |||
+ | </ | ||
+ | |||
+ | <WRAP clear></ | ||
+ | |||
+ | ===== Installation and mounting ===== | ||
+ | * :!: Carefully open WM-1 module and configure serial communication with jumpers. (Default configuration is 9600bps, 8N1 with normal timeout) | ||
+ | * :!: Place WM-1 module at least 10cm from other objects. Installation is not recommended inside metal cabinets. | ||
+ | * Connect RS485 terminals to WM-1 RS485 terminals | ||
+ | * A - A | ||
+ | * B - B | ||
+ | * C - GND | ||
+ | * Connect to 230V power supply | ||
+ | * Bind modules to wireless network | ||
+ | |||
+ | |||
+ | |||
+ | {{ wiki: | ||
+ | {{ wiki: | ||
+ | |||
+ | <WRAP pagebreak></ | ||
+ | |||
+ | ===== Features ===== | ||
+ | |||
+ | * replacement for RS485 wiring | ||
+ | * Modbus RTU serial protocol | ||
+ | * wired/ | ||
+ | * very long range, no hopping | ||
+ | * protected private connection | ||
+ | * multiple slaves per device | ||
+ | * multiple addressable groups | ||
+ | |||
+ | |||
+ | ===== Technical specification ===== | ||
+ | |||
+ | | Power supply: | ||
+ | | Ingress protection: | ||
+ | | Operating temperature: | ||
+ | | Storage temperature: | ||
+ | | Relative humidity: | ||
+ | |||
+ | ===== Terminals and wiring ===== | ||
+ | |||
+ | | To power sensor ^ A | RS485 bus | | ||
+ | | ::: ^ B | ::: | | ||
+ | | ::: ^ C | ::: | | ||
+ | | To power supply ^ L| 230V AC | | ||
+ | | ::: ^ N| ::: | | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | <WRAP pagebreak></ | ||
+ | |||
+ | ===== Serial configuration and timeout ===== | ||
+ | * Available baudrates 2400, 9600, 19200, 38400 bps | ||
+ | * Data bits and parity 8N1, 7E1, 8E1, 8N2 | ||
+ | * :!: Max 64 bytes per transmition | ||
+ | * Integrated 240 Ohm termination resistor | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ===== Wireless binding ===== | ||
+ | |||
+ | ==== Create new secure group ==== | ||
+ | | ||
+ | * turn on all devices at the same time | ||
+ | * within 10 seconds, while RF LED is blinking, press and hold button on one of the devices | ||
+ | * after a second, the new address is randomly generated and sent to all devices. RF LED will blink 3 times to confirm the new address. | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ==== Add new device to the group ==== | ||
+ | | ||
+ | * turn on the device | ||
+ | * within 10 seconds, press and hold button on one of the existing devices | ||
+ | * after a second, the existing group address is sent to the new device. RF LED will blink 3 times to confirm the address is sent. | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ==== Topology examples ==== | ||
+ | | ||
+ | * Modbus master, connected to 12 slaves using a pair of WM-1 devices | ||
+ | * Modbus master, connected to 10 slaves, organized in two groups | ||
+ | * Modbus master, connected to 5 slaves, each one having local WM-1 device | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ==== Multiple groups ==== | ||
+ | | ||
+ | * When the system has two or more separate Modbus lines, they should be configured as separate groups. | ||
+ | * Each group has a single master and one or more slaves. | ||
+ | * Groups can't talk to each other, but they share the same bandwidth. | ||
+ | * Two masters may start transmitting at the same time causing collisions. | ||
+ | * To reduce number of missed messages, keep the traffic low. | ||
+ | | ||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ===== Connection check ===== | ||
+ | * Press button shortly | ||
+ | * RF LED will blink shortly on each connected device | ||
+ | * Serial interface is unaffected | ||
+ | |||
+ | |||
+ | {{ wiki: | ||
+ | |||
+ | ===== Factory reset ===== | ||
+ | * Hold button and turn the device ON | ||
+ | * RF led will blink twice. Group address is now reset to default. | ||
+ | * Other devices will not be affected. | ||
+ | |||
+ | {{ wiki: |