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5. RS485 communication port
5.1 Connecting the RS485 output
a. Point to Point
b. Point to Multi-point
5.2 Communication Mode for RS485
(a) Continuous mode: send data continuously
STX NULL Device
Add.
Operate
Command
CR
LF
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(b) Demand mode: send data when a PRINT command is issued
from the peripheral equipment.
STX Add.
I/O
Weight
Data
Weight
Units
State
Parity
bit
CR LF
5.3 Data Format ( TI-1500VC Vision:V3.5c)
Start Transmission (1 bit): STX;
Device Address (2 bits): Address information;
I/O port state (3 bits): I/O port state information;
Weight Data (8 bits): Symbol (1 bit) + Decimal Point (1 bit) + xxxxxx
(6 bits, integer type);
Weight Units (1 bit): K-kg, L-lb
State (1 bit): 0-Overload, M-Motion, H-Hold, S-Stability;
Parity bit (1 bit): The low-byte of the sum of Device address, I/O
port state, Weight Data, Weight Units and State;
End symbol (2 bits): CR+LF
Note:
Weight Data, the definition of the decimal point:
0 ----- No decimal point (Integer)
1 ----- Number with one decimal place
2 ----- Number with two decimal place
3 ----- Number with three decimal place
4 ----- Number with four decimal place
8 ----- No decimal point (Integer)
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PC
TI-1500VC
TI-1500VC
adr:03
TI-1500VC
adr:01
adr:02
TI-1500VC
adr:xx
adr:00
TI-1500VC
PC