產(chǎn)品參數(shù)：BENTLY 3300/20-01-01-02-00-00
軟件完成
modbus rtu格局通信協(xié)議是以主從辦法進(jìn)行數(shù)據(jù)傳輸?shù)模趥鬏數(shù)倪^(guò)程中主站是自動(dòng)方，即主站發(fā)送數(shù)據(jù)懇求報(bào)文到從站，從站回來(lái)呼應(yīng)報(bào)文。modbus體系間的數(shù)據(jù)交換是經(jīng)過(guò)功用碼(function code)來(lái)操控的，有些功用碼是對(duì)位操作的，通訊的用戶數(shù)據(jù)是以位(bit)為單位的：
fc01 讀輸出位的狀況
fc02 讀輸入位的狀況
fc05 強(qiáng)行單一輸出位
fc15 強(qiáng)行多個(gè)輸出位
有些功用碼是對(duì)16位寄存器操作的，通訊的用戶數(shù)據(jù)是以字(word)為單位的：
fc03 讀輸出寄存器
fc04 讀輸入寄存器
fc06 寫(xiě)單一輸出寄存器
fc16 寫(xiě)多個(gè)輸出寄存器[1]
cp341與3500/92的通訊，cp341做主站，3500/92做從站，主站、從站都需要設(shè)置波特率、中止位、校驗(yàn)位。這兒設(shè)置波特率為9600bit/s，一位中止位,無(wú)奇偶校驗(yàn)。cp341 modbus協(xié)議通訊是經(jīng)過(guò)simatic step7編程軟件，并利用庫(kù)函數(shù)fb8(p-snd-rk)和fb7(p-rcv-rk)功用塊進(jìn)行發(fā)送和讀取數(shù)據(jù)操作的。它們均經(jīng)過(guò)組態(tài)數(shù)據(jù)庫(kù)的辦法進(jìn)行發(fā)送源信息和接納意圖數(shù)據(jù)的信息，懇求信息時(shí)，從源數(shù)據(jù)庫(kù)讀取相應(yīng)字段后發(fā)送，接納信息是依據(jù)發(fā)送的內(nèi)容進(jìn)行對(duì)應(yīng)字段數(shù)據(jù)的存儲(chǔ)。報(bào)文格局存放在db42中前6個(gè)字節(jié)中，選用句子表言語(yǔ)編寫(xiě)程序
以下產(chǎn)品，低價(jià)供應(yīng)：ently Nevada 2155/00-10-03-00-01-11-11-
11-11-11-00 Transient Data Interface (TD
BENTLY NEVADA 3500 RACK WITH POWER SUPPLY
AND MODULES 20/50/32/42M(3)/93
BENTLY NEVADA 3500 RACK W/ POWER SUPPLY
MODULES 15/20/50/32/42M(4)/93 & I/Os
BENTLY NEVADA 3500 RACK W/ POWER SUPPLY
MODULES 15/20/50/32/42M(4)/93 & I/Os
BENTLY NEVADA 2155/00-06-03-00-01-11-11-
11-00-00-00 USPP 2155000603000111
BENTLY NEVADA TRANSIENT DATA MGR 2100/00
-01-07-01-00
BENTLY NEVADA 3300/16-02-01-03-00-00-02
WITH 81564-01 NEW 330016020103000002
BENTLY NEVADA 3300/35-11-01-01-00-00 NSPP
3300351101010000
BENTLY NEVADA 72201-02-02-05-01-01-01
USPP 7220102020501010
BENTLY NEVADA TDX NET TRANSIENT DATA
INTERFACE # 2155100-05-03-05-01-11-11-10
BENTLY NEVADA 3300/35-11-01-01-00-00 USPP
3300351101010000
BENTLY NEVADA 3500/50 3500
BENTLY NEVADA 3500/50 Tachometer Module
BENTLY NEVADA 3300/16-04-01-01-00-00-00
3300/16040101000000
BENTLY NEVADA 3300-50-01-01-01-00 USPP
33005001010100
Bently Nevada 103928-02 Sampler Card
TDXnet PLC Transient Data Interface 5160
Bently Nevada 134652-01 Sampler TDXnet
PLC Transient Data Interface 137305-01
NEW BENTLY NEVADA 3500 PROCESS MONITOR
3500/62
BENTLY NEVADA 3300/50-02-01-00-00 USPP
33005002010000
BENTLY NEVADA 3300/50-01-01-01-02 USPP
33005001010102
BENTLY NEVADA 3300-16-02-01-01-01-02-00
USPP 3300160201010102
BENTLY NEVADA 3500/64M NSPP 350064M
BENTLY NEVADA 3300/55-03-04-06-06-00-00-
05-00 USPP 3300550304060600
BENTLY NEVADA 3300-16-02-01-01-01-01-00
USPP 3300160201010101
NEW BENTLY NEVADA 18745-03 5 & 8 MM
PROXIMITY SENSOR 7200 D327409
NEW BENTLY NEVADA 18745-03 5MM PROXIMITY
SENSOR 7200 D327399
Bently Nevada Romis 7200 Chassis
NEW BENTLY NEVADA 3300/16-04-01-01-00-00
-00 DUAL VIBRATION XY/GAP MONITOR
NEW BENTLY NEVADA 3300/20-02-01-03-00-00
DUAL THRUST MONITOR
BENTLY NEVADA 3300 RACK WITH POWER SUPPLY
AND MODULES -- 12 (1) /03 (1) /16 (4)
Bently Nevada Dual Accelerometer Monitor
Model 3300/25-03-06-01-00-02-00 New
Bently Nevada Dual Vibration Monitor
Model 3300/15-02-01-00-00-00-00- NIB
Rebuilt Bently Nevada Turbine Vibration
Monitoring System 3300 3300/06-0.3
BENTLY NEVADA 2201/02-02 USPP 22010202
BENTLY NEVADA 3500/93 System Display
Factory Sealed
Bently Nevada Romis 7200 Chassis
BENTLY NEVADA 3500/42M NSFP 350042M
BENTLY NEVADA 3500/42 NSFP 350042
BENTLY NEVADA 3300/55-03-04-05-05-00-00-
07-00 USPP 3300550304050501
BENTLY NEVADA 3300/20-01-01-02-00-00 USPP
3300200101020000
Bently Nevada 7200 Chassis with 4
Vibration Monitors and 2 Dual Probe
Monitors
Bently Nevada - 3300/95 - Gas Generator
Filter Module / Vibration Monitor
Bently Nevada - 3300/95 - Power Turbine
Filter Module / Vibration Monitor
Bently Nevada - 3300/25 - Dual
Accelerometer Monitor
(5731) Bently Nevada Transducer Velocity
Control Velomitor 330750-80
Bently Nevada 3300/50-03-01-00-00
Tachometer
Bently Nevada 3300/46-XX-02-01-00
Differential Expansion Module
BENTLY NEVADA 3500/42M NSPP 350042M
Bently Nevada 3500/93 Display Interface
Module PWA 135799-01 C
Bently Nevada 3500/62 Process Variable
Monitor
Bently Nevada 3500/40M Proximitor Monitor
140734-01 & I/O Connection Module
BENTLY NEVADA 3300/16-03-02-00-00-00-00
NSPP 3300160302000000
Bently Nevada 3500/42M Proximitor/
Seismic Monitor NOV
Bently Nevada 105401-02 Sampler Card
TDXnet PLC Transient Data Interface 3407
2201/02-02 Bently Nevada for Allen
Bradley 1771
NEW BENTLY NEVADA 3300-16-01-02-01-00-00
-01 DUAL VIBRATION XY GAP MONITOR
