Summary Table Setting Values; Modbus Communication System Integration; Basic Features Of Modbus-Rtu Control - S&P CAB ECOWATT PLUS Manual

7.3. SUMMARY TABLE SETTING VALUES

Registro
EN
T1
T2
T3
Period T1
Period T2
Period T3
Set T1
Set T2
Set T3
Date start
Hour start
Date end
Hour end
Set Holidays

8. MODBUS COMMUNICATION SYSTEM INTEGRATION

8.1. BASIC FEATURES OF MODBUS-RTU CONTROL

Addressing
Diffusion
Transmissions speed
Parity
Mode
Electrical interface
Connector type
Direction
8 bits
Format for each byte in RTU mode is:
• System codes: 8–bit binary
• Bits per Byte: 1 bit to START (start)
62
Min. Max.
OFF 23:59
0min 480min
OFF 100%
00:00 23:59
00:00 23:59
00:00 23:59
00:00 23:59
OFF 100%
Slave: confi gurable address from 1 to 247
Yes
9600 (19200 is recommended too)
PAR/EVEN
RTU
RS485 2W-wired or RS232
RJ 45
MODBUS message
Function Dates
8 bits N x 8bits
8 bits for data, the most signifi cant bit is sent fi rst
1 bit for parity (Even parity is required)
1 bit for STOP (end)
Description
Start time period frame
Period frame duration
Percentage over set point
Starting date holidays period
Starting hour holidays period
Ending date holidays period
Ending hours holidays period
Percentage over the set point for holidays period
Master: able to adress slaves with address from 1 to 247
CRC verifi cation
16 bits