1、紫金橋監(jiān)控組態(tài)軟件與臺達(dá)PLC的連接撰文作者：祝艷偉公司網(wǎng)址：臺達(dá)DVP系列PLC支持Modbus ASCII&RTU 串口協(xié)議。因此與紫金橋監(jiān)控組態(tài)軟件進(jìn)行連接時可以選用Modicon(莫迪康)下面的Modbus(ASCII & RTU 串口通訊)協(xié)議，如下圖所示：雙擊，進(jìn)入定義設(shè)備頁面(如下圖所示)：設(shè)備名稱：是一個邏輯名，可以根據(jù)實(shí)際需要命名為有一定含義的名字；數(shù)據(jù)刷新周期：默認(rèn)是50毫秒。紫金橋軟件的IO Server采集數(shù)據(jù)的頻率。超時時間：默認(rèn)8秒，當(dāng)?shù)匠瑫r時間的時候，PLC的數(shù)據(jù)還沒傳上來被認(rèn)為是一次通訊超時。以上兩項(xiàng)根據(jù)實(shí)際的數(shù)據(jù)更新要求、串口、PLC性能進(jìn)行設(shè)

2、置。設(shè)備地址：根據(jù)實(shí)際PLC地址設(shè)定，必須與要通訊的PLC地址一致。串口為PC機(jī)端的COM口。單擊“設(shè)置”按鈕,彈出通信端口的參數(shù)設(shè)置，這個根據(jù)具體PLC進(jìn)行設(shè)置。單擊下一步，彈出協(xié)議選擇對話框，臺達(dá)PLC對于RTU,ASCII方式都支持。注意：因?yàn)榕_達(dá)PLC的特殊性，在某些型號的PLC對于每次讀取數(shù)據(jù)的包長有特殊要求。所以這里一定要對包長進(jìn)行設(shè)置，單擊高級按鈕，把包的最大長度設(shè)置為16。單擊確定及完成了邏輯設(shè)備的定義。對于數(shù)據(jù)庫點(diǎn)的外部連接，下面給出臺達(dá)PLC對應(yīng)Modbus寄存器地址的對照表。對照表格選擇寄存器類型，偏置中輸入紫金橋地址即可。例如：臺達(dá)PLC中的寄存器M10，查表得到Mod

3、bus地址為002059，寄存器類型為DO,紫金橋中的偏置地址為2058。因此，得到如下輸入：臺達(dá)PLC寄存器地址于Modbus寄存器地址對照表寄存器類型范圍(Range)類型（Type）DVP地址（Hex）Modbus地址（Dec）Modbus寄存器紫金橋地址S000-255Bit0000-00FF000001-000256DO0255S256-511Bit0100-01FF000257-000512DO255-511S512-767Bit0200-02FF000513-000768DO512-767S768-1023Bit0300-03FF000769-001024DO768-1023X0

4、00-377(Octal)Bit0400-04FF101025-101280DI1024-1279Y000-377(Octal)Bit0500-05FF001281-001536DO1280-1535T0-255Bit0600-06FF001537-001792DO1536-1791Word0600-06FF401537-401792HR1536-1791M0-255Bit0800-08FF002049002304DO2048-2303M256-511Bit0900-09FF002305-002560DO2304-2559M512-767Bit0A00-0AFF002561-002816DO2

5、560-2815M768-1023Bit0B00-0BFF002817-003072DO 2816-3071M1024-1279Bit0C00-0CFF003073-003328DO3072-3327M1280-1535Bit0D00-0DFF003329-003584DO3328-3583M1536-1791BitB000-B0FF045057-045312DO45056-45311M1792-2047BitB100-B1FF045313-045568DO45312-45567M2048-2303BitB200-B2FF045569-045824DO45568-45823M2304-2559

6、BitB300-B3FF045825-046080DO45924-46079M2560-2815BitB400-B4FF046081-046336DO46080-46335M2816-3071BitB500-B5FF046337-046592DO46336-46591M3072-3327BitB600-B6FF046593-046848DO46592-46847M3328-3583BitB700-B7FF046849-047104DO46848-47103M3584-3839BitB800-B8FF047105-047360DO47104-47359M3840-4095BitB900-B9FF

7、047361-047616DO47360-47615C0-199(16 bit)Bit0E00-0EC7003585-003784DO3584-3783Word0E00-0EC7403585-403784HR3584-3783200-255(32 bit)Bit0EC8-0EFF003785-003840DO3784-3839Word0EC8-0EFF403785-403840HR3784-3839D000-255Word1000-10FF404097-404352HR4096-4351D256-511Word1100-11FF404353-404608HR4352-4607D512-767W

8、ord1200-12FF404609-404864HR4608-4863D768-1023Word1300-13FF404865-405120HR4864-5119D1024-1279Word1400-14FF405121-405376HR5120-5375D1280-1535Word1500-15FF405377-405632HR5376-5631D1536-1791Word1600-16FF405633-405888HR5632-5887D1792-2047Word1700-17FF405889-406144HR5888-6143D2048-2303Word1800-18FF406145-

9、406400HR6144-6399D2304-2559Word1900-19FF406401-406656HR6400-6655D2560-2815Word1A00-1AFF406657-406912HR6656-6911D2816-3071Word1B00-1BFF406913-407168HR6912-7167D3072-3327Word1C00-1CFF407169-407424HR7168-7423D3328-3583Word1D00-1DFF407425-407680HR7424-7679D3584-3839Word1E00-1EFF407681-407936HR7680-7935D

10、3840-4095Word1F00-1FFF407937-408912HR7936-8911D4096-4351Word9000-90FF436865-437120HR36864-37119D4352-4607Word9100-91FF437121-437376HR37120-37375D4608-4863Word9200-92FF437377-437632HR37376-37631D4864-5119Word9300-93FF437633-437888HR37632-37887D5120-5375Word9400-94FF437889-438144HR37888-38143D5376-563

11、1Word9500-95FF438145-438400HR38144-38399D5632-5887Word9600-96FF438401-438656HR38400-38655D5888-6143Word9700-97FF438657-438912HR38656-38911D6144-6399Word9800-98FF438913-439168HR38912-39167D6400-6655Word9900-99FF439169-439424HR39168-39423D6656-6911Word9A00-9AFF439425-439680HR39424-39679D6912-7167Word9

12、B00-9BFF439681-439936HR39680-39935D7168-7423Word9C00-9CFF439937-440192HR39936-40191D7424-7679Word9D00-9DFF440193-440448HR40192-40447D7680-7935Word9E00-9EFF440449-440704HR40448-40703D7936-8191Word9F00-9FFF440705-440960HR40734-40959D8192-8447WordA000-A0FF440961-441216HR40960-41215D8448-8703WordA100-A1FF441217-441472HR41216-41471D8704-8959WordA200-A2FF441473-441728HR41472-41727D8960-9215WordA300-A3FF441729-441984HR41728-41983D9216-9471WordA40