B3:0 05 FY-Il Tower 1 Tower LNot Tower I Not Process Gas In Service Out of Serv.. In Regen, Out of Tower 1 FY3 Tower I Tower} Not Tower ft Not Heating Gas In Regen, Out of Serv.. in Ser
Trang 1Transmitter |
(TX)
Generates
Station 1
Transmitter
(TX)
Channel n ———>
Ly Channel 1 ————>
Station 2
(RX)
Two directions
| in both directions |
Trang 2
Data flow direction and time
of transmission Bits uie-aliened
An 8-bit character
MUX—————>\MUX
TXI
MUX|—E "E1 "5 _ vÌMUXÌ———>| PLC
MUX
time channels
10101010
Pump 212 Data rignal Pump 212 Pump212 | Echo signal Pump 212
121
Trang 3
orots>Bx>n~-
-IBBBBESEESAES©
869
oZSEESZSaeESS
ESBS
Table 10-1 ASCII Code
8S85ã5555555588Ẽ
-
122
Trang 4+ Data flow
Table 10-2 VRC/LRC Odd-parity Example
Biz oTOTOT oO 1
Parity Bat
————m———>
Retransmits data |—————>‡| Dat+OK
Send more data6 |—>| DataOK
Sends end of data [———*| Datw OK
| Disconnects
on Parity Bit Stop Bits &
7
1
Trang 5
+ Transmission flow direction
[sync ]s¥nc] som Jextefenrafoxte] “pata [exe Teow |
Header | Text or Data Trace or Tail
SYNC | SYNC] SOH Header | STX DATA ETX | BCC or CRC
EXAMPLE 10-3
Problem: Assemble the bit streams that are required to send the message
check character (BCC or CRC) at the end of the transmission
Solution: Use the ASCII code in Table 10-1 to find the bits required as
follows: SYNC = 00010110, SOH = 00000001, STX = 00000010, M =
11001101, 1 = 00110001, space = 00100000, 0 = 01001111, N = 11001110, ETX = 10000011,
124
Trang 6Accou Pu
Gateway —Be| PL
[ PC } | PC ]
< Automation and Control Network > Level
< Field Device Network > Level 1
Maties
Valve
Station 2
Node (typical)
Ring network Station 4
Station 1 Station 2 Station 3 Station s i
Bus network
Node (typical)
Trang 7
Station §
Station 4
LEVELS
Application
Presentation —
Session Transport Network
Data Link Physical
Transmitter
Physical communication link
Figure 10-23 ISO/OSI seven-layer communications standa
126
Station 2
Station 3
Trang 8
Gas In
Heating
Gas tn
Output
Address
0:001/10
O;041/11
O:001/12
0:001/13
O:001/14
O:001/15
O:001/16
©:001/17
BỊ
1771-0A 120 Vac
18-1
Tàu scan,
1 "m3
AHGee
s&s
33.3:
Trang 9
TS
Sle oe
AC-ln
I771-1A
we® [E——
wee [EE——
120 Vac
AC-Im 1771-14
{i} -{i} Att 12
J {ø] 7S-1B-12 Q)1
128
Loos
100006
LOW 10
1000/11 “
1000/12
1:000/13
1000/14
1:000/15 - 1:IM0:16 I:0@(V1?
Trang 10JBI
Table 11-2 GUI Bit Assignments
Bit Address Description Bit Address
B3:0/00 Automatic mode B3:0/05
B3:0/03 T1t^ service B3:0/08
B30/04 T10ut of service
Rung 0
Tower 1
In Service
B30
03
Trang 11
Tower 1
In Regen
B3:0
05
FY-Il Tower 1 Tower LNot Tower I Not Process Gas
In Service Out of Serv In Regen Into Tower I
FY-7 Tower I Tower I Not Tower 1 Not Process Gas
In Service Out of Serv In Regen, Out of Tower 1
FY3 Tower I Tower} Not Tower ft Not Heating Gas
In Regen, Out of Serv in Service Into Tower I
FY
Tower | Tower | Not Tower! Not Heating Gas
In Regen Out of Serv In Service Out of Tower 1
130
Trang 12
"h
XS
Micro-1000 PLC
VO Address
.e o—13H-1 1 @ 1:02 o:an@t——(2
Pump 2 Sta
Spare | 03 vae ©
pg JL ig MEU OD 1:04 0:02@
2) - xŒ@d —o : 120 Vac In
Trang 13
Alternator Low-Low
|
Pump | 0:00
|
-
High High
Pump 2 Level
Pump l1 0:00
=e
1
132
Trang 14Rang 3 Lew-Low
Level
[-tW2
Bit 1:03
} |
Level 1:81
—
Pump nai
(
Pump 2
O:ol
et
)
HT
Pump !
©O:0/0
| |
Level 1:00
Wh
Truyền thông đơn hướng
Truyền thông bán hai chiều
Truyền thông hai chiều
Phương pháp truyền tin
Truyền song song
Truyền nối tiếp
Bộ dồn tín hiệu
Bộ dồn kênh tần số
Don kénh thoi gian
Don kénh bang thong ké
Lỗi điều khiển va kiểm tra
Kiểm tra ồn
Kiểm tra mức lượng dư dọc
Kiểm tra lượng dư ngang
Kiểm tra lượng dư trụ
Các qui chuẩn truyền thông
Truyền nối tiếp đồng bộ
Qui phạm truỳen nối tiếp đồng bộ
Qui phạm truyên nhị phân đồng bộ
Qui phạm HDLC
Mạng nội bộ LAN
Cấu hình mạng LAN
Qui phạm mạng LAN
Cấu trúc mạng tiêu chuẩn
Tiêu chuẩn phần cứng nối tiếp
Tiêu chuẩn EIA232
||
H-
Pump 2
11
ct