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--- wiki:20_rdc_charger:03_hardware:22_wm-1 [2023/03/31 09:24] – ↷ Page moved from wiki:02_rdx_charger:03_hardware:22_wm-1 to wiki:20_rdc_charger:03_hardware:22_wm-1 goran.kocjancic
+++ wiki:20_rdc_charger:15_hardware:22_wm-1 [2023/03/31 10:07] – removed - external edit (Unknown date) 127.0.0.1
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-====== Wireless Modbus-to-Modbus bridge ======
-**Wireless Modbus-to-Modbus bridge**
-<WRAP column 350px>
-{{ :wiki:rdx_charger:03_hardware:wm1_module.png?nolink |}}
-</WRAP>
-<WRAP column 300px>
-| Model number: ^ WM-1       |
-| Frequency:    | ISM 868MHz (EU) |
-| Dimensions:   | 93x45x27 mm     |
-===== Applications =====
-  * Replacement for RS485 wiring solution with wireless. Optimal for long range Modbus RTU serial communications with half duplex configuration.
-</WRAP>
-<WRAP clear></WRAP>
-===== 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:rdx_charger:03_hardware:wm1_module_diagram.png?nolink&0x500  }}
-{{ :wiki:rdx_charger:03_hardware:wm1_mounting.png?nolink&0x500  }}
-<WRAP pagebreak></WRAP>
-===== Features =====
-  * replacement for RS485 wiring
-  * Modbus RTU serial protocol
-  * wired/wireless combinations
-  * very long range, no hopping
-  * protected private connection
-  * multiple slaves per device
-  * multiple addressable groups
-===== Technical specification =====
-| Power supply:          |                                230V, 50/60Hz, 1W |
-| Ingress protection:    |                                    IP20 |
-| Operating temperature: |                                 -20..50°C |
-| Storage temperature:   |                               -40..85°C |
-| Relative humidity:     |                              0..85% n/c |
-===== Terminals and wiring =====
-| To power sensor ^ A | RS485 bus  |
-| :::            ^ B | :::        |
-| :::            ^ C | :::        |
-| To power supply ^ L| 230V AC |
-| :::             ^ N| :::     |
-{{ :wiki:rdx_charger:03_hardware:wm1_wiring.png?nolink&0x200  }}
-<WRAP pagebreak></WRAP>
-===== 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:rdx_charger:03_hardware:wm1_serial.png?nolink&0x500  }}
-===== 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:rdx_charger:03_hardware:wm1_configuration_1.png?nolink&0x500  }}
-==== 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:rdx_charger:03_hardware:wm1_configuration_2.png?nolink&0x500  }}
-==== 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:rdx_charger:03_hardware:wm1_topology.png?nolink&0x500  }}
-==== 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:rdx_charger:03_hardware:wm1_multiplegroups.png?nolink&0x500  }}
-===== Connection check =====
-  * Press button shortly
-  * RF LED will blink shortly on each connected device
-  * Serial interface is unaffected
-{{ :wiki:rdx_charger:03_hardware:wm1_connectioncheck.png?nolink&0x150  }}
-===== 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:rdx_charger:03_hardware:wm1_factoryreset.png?nolink&0x200  }}