Author: StefanoT76

Date: 26/03/2024
Revision: SW 0.9.6 HW V0.2 (new motor)

IDE configuration: STM32 MCU Based Boards, generic STM32F1 series, BulePill F103CB or C8 with 128k, Upload with SWD,
CDC generic serial, USART enebled (to configure the second HW serial)

Prototype of a reasonable made field mill

Master SW for Windows 10 Modpoll Modbus Master Simulator

With RS485 module TX and RX are swapped on bluepill side

Commands:

cd C:\Users...\Documents\Field_Mill\Modbus_DRIVER

READING

modpoll -b 19200 -p even -m rtu -a 1 -r 1 -c 16 COM12 // read 16 registers of 16bit each
modpoll -b 19200 -p even -m rtu -a 1 -t3:float -r 4 -c 2 COM12 // read Field output float starting at address 4
modpoll -b 19200 -p even -m rtu -a 1 -t3:int -r 8 -c 1 COM12 // read internal T
modpoll -b 19200 -p even -m rtu -a 1 -t3:hex -r 11 -c 1 COM12 // read zero adc count
modpoll -b 19200 -p even -m rtu -a 1 -t3:hex -r 10 -c 1 -1 COM12 //Read internal status

WRITING

modpoll -b 19200 -p even -m rtu -a 1 -t4:float -r 14 -1 COM12 2000.0 //write calibration data for sensitive channel
modpoll -b 19200 -p even -m rtu -a 1 -t4:float -r 16 -1 COM12 0.0 //write offset data for sensitive channel
modpoll -b 19200 -p even -m rtu -a 1 -t4:float -r 2 -1 COM12 20000.0 //write calibration data for insensitive channel
modpoll -b 19200 -p even -m rtu -a 1 -t4:float -r 18 -1 COM12 0.0 //write offset data for insensitive channel
modpoll -b 19200 -p even -m rtu -a 1 -1 -t4:float -r 14 -c 1 100.00 COM12 // write one float starting at address 14
modpoll -b 19200 -p even -m rtu -a 1 -1 -t4:hex -r 10 -c 1 0x0000 COM12 // write 16 bit starting at address 10
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x0000 //stop motor
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x0002 //start motor or disable heater or clear plates
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x0006 //enable heater
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x0003 // short plates and leave motor running
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x0001 // short plates
modpoll -b 19200 -p even -m rtu -a 1 -t4:hex -r 10 -c 1 -1 COM12 0x000A // write EEPROM 0000 0000 0000 1010 binary

au16data[9] stucture:

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 bit

0 0 0 0 0 0 O1 O0 0 0 0 0 W H R P function

O1 --> overflow sensitive
O0 --> overflow insensitive
P --> Short (1) - clear (0) plates
R --> Start (1) - Stop (0) motor
H --> Enable (1) - Disable (0) heater
W --> write EEPROM