Biddle-TLS / ModBus-RTU

The module is mounted directly in the remote or BEMS module and allows access to various parameters.

Alternatively for configuration there is serial console interface.

harware versions / types

version	LEDs	I/O	RS485	SIO	clock	size	misc
0.x.x	10	8+2	1	1	16 MHz (crystal)	24.7×24.9mm
1.0.x	4	8+3	2	1	16 MHZ (crystal)	22.2x24mm	pads on lower and upper layer
1.1.x	4	8+3	2	1	16 MHz (clock-generator)	28x24mm	pads on lower and upper layer 3mm drill top left optocoupler on PCB
2.0.x	4+4	8	2	1	16 MHz (crystal)	28x44mm	on lower layer 3mm drill top left optocoupler on PCB low-cost Biddle-SIO rotated
3.0.x	4+1	4	1	0	16 MHz (crystal)	26x38mm	layout for BEMS
3.1.x	6+1	0	2	0	16 MHz (crystal)	26x38mm	layout for BEMS second RS485 for RTD communication
3.x.x_btm182	4+1+2	0	1	0	16 MHz (crystal)	46x38mm	layout for BEMS bluetooth SPP support

default-config

Biddle - Seriell

5V- USART interface (no RS232!)

baudrate	bits	parity	stop-bits
38400	8	keine	1

Konsole - Seriell

5V- USART interface (no RS232!)

baudrate	bits	parity	stop-bits
9600	8	keine	1

ModBus-RTU (RS485)

Halb-Dublex 2-wire bus.

baudrate	bits	parity	stop-bits	address
9600	8	keine	1	0xf0 (240)

wire-color	RS485
Weiß	B-
Schwarz	A+

documentation

LEDs

MB0 - ModBus / RS485
Biddle - communication with biddle interface / biddle parameters
rote LEDs - send
gründe LEDs - receive
gelbe LED - working

factory-reset

With firmware version 260 and above it's possible to reset the modules settings to factory defaults (see above).

Once the reset-condition is met, all LEDs will light up once per second. After 5 seconds the defaults will be set and the module restarts with the default settings.

condition on hardware 2.x.x

There are 3 pads located at the left lower side of the PCB. The most left (input) and the right pad (GND) should be connected.

condition on hardware 3.x.x

Short circuit the two pins labeled ADDR_2 at the left top side of the PCB.

pictures

V2

V3