MODBUS通讯协议及编程

1、邢唷? ?eg?d欹? 餜?靷bjbj ?8?r? r? ?6?*6?*?2?$?hIx?i?堈 )?*?0?D,2?M O D B U S 惎婳 S 畫蔛 z. t x t 篘 u 蛻亯剉N/fb 賨剉 MOn/fb g 剉筫 T 0N 亯(u 陙馷剉 桞 l 籗 a 埾?R 篘剉賬圢&T R8l 軓/f 眀( 0M O D B U S 惎婳 S 畫蔛 z0 0M o d B u s 惎婳 S 畫 R:NR T U OS 畫孴 A S C I I OS 畫 blQ 鳶剉 Y 蛓闚 h 堼惽?uM o d B u sR T U 惎婳 S 畫俌C H 2 0 0 0 zf 齹 5u 汻裿

2、 Km 闚0C H 2 0 0 0 M 5u 汻耂 pe 菓茤!jWW0 醈纇h?0pefh?0IQ 駁 pefh 圛 0Nb?M o d B u sR T U OS 畫亯薔蛜俌NN0 惎婳 S 畫N0 惎?O惞 e_0 0 惎?O?R:N 靣藌剉酧 o4Y孴裇悇 v xpenc 0 錘N 剉 惎?O惞 e_歔 IN_NNM O D B U SR T U 惎嬆墻鴙|Q 筟 x8 MO 孨蹚 6Rw 嵥 YMO1 MOpencMO8 MOGYvP!h 寶 MO1 MOvP!h 寶 MOPbkMO1 MO 曪?h 纇C R C桻 YO 猒痵x R 薡觺刧=e4 W倐剉鰁魰0WWx=1W倐烺齹x=1

3、W倐penc:S=NW倐 曪?h 纇=1 6 MOC R Cx觺_g 觺刧=e4 W倐剉鰁魰0 00WWx0WWx:N 惎?O悇v, N*NW倐 0購*NW倐h?f1u(u7b緥歔0WWx剉蜰:g 6e1u;N:g 裇恊 g 剉酧 o 0v N 蟢*N 蜰:g 龕gwQg/U N 剉 0WWxv N 蚑擽轛怗 W 錘 T 陙剉 0WWx _薡 0;N:g 裇悇 v0WWxh?f 裇?R 剉蜰:g0WW蜰:g 裇悇 v0WWxh?f 轛悇 v 蜰:g0WW 00 0 烺齹x 惎?O悇 v,孨*NW倐 0M o d B u s 惎嬆墻歔 IN 烺齹鱏:N1 0R1 2 7 0,g 闚 h 堦 S)

4、R(uvQ-N 剉 N 钀 R 烺齹x 0O:N;N:g 鲖 Bl 裇? 惽彑 R齹xJT 蓩蜰:ggbL 埨 NHNO 0O:N 蜰:g 蚑擽蜰:g 裇悇 v 烺齹xN 蜰;N:g 裇恊 g 剉烺齹x N7hvh?f蜰:g騗蚑擽;N:g蹚L埻dO 0俌済蜰:g裇悇v烺齹x剉 g貧MO:N( 詋俌烺齹xYNdkT 鰁 1 2 7 ) Rh?f 蜰:gg 蚑擽蚫O b 裇慂 Q ?00 0penc:Spenc:S/f9hncNT 剉烺齹xNT 0penc:S 颯錘/f 瀃 E 杙 eP0 緥 n筽0;N:g 裇愘蜰:g b 蜰:g 裇愘;N:g 剉 0WW 00 0C R Cx孨 W倐剉 曪嬂

5、hKmx 0孨0 惎嬆墻0 0S_ 惎媫 T 銷裇愺侁 NhV 鰁&T 鴙擽 0WWx 剉緥Y 惎媫 T 銷vd 柣 S0WWx麐諷酧 o俌済g 鶴 ? RgbL 堷 v 擽剉鸑6qT 奲 gbL 堄済詮愘裇? 0 詮悇 v 酧 o-NS 靊 0WWx0gbL 埁 RO 剉烺齹x0gbL 埁 ROT 觺済剉 penc 錘蔛 曪?h 寶x 0 俌済鶴 ?N 裇慃 NUO 酧 o 01酧 o觺刧0WWx烺齹xpenc:S 曪?h 寶x8 MO8 MON?8 MO1 6 MO0 00WWx0WWx/f 酧 o剉, NW倐( 8 MO)蜰 0 0R2 5 5 0 購*NW倐 h?f1u(u7b

6、 緥 n0WW 剉蜰:g 6e1u;N:g 裇恊 g 剉酧 o 0蟢*N 蜰:g 龕臺?g/U N 剉 0WWxv N 闟g&T0WWx 剉蜰:gMb 齹蚑擽轛?0S_蜰:g 轛愥 Oo鰁鴙 S_剉 0WWxh?f 鍕酧 oeg 陙嶯 UO Y 00 0烺齹x;N:g 裇悇 v 烺齹xJT 蓩蜰:ggbL 埨 NHN 鸑 0h? - 1 R 鶴剉烺齹x 龕gwQSO 剉+TIN 蔛蚫O 0鉔x+TIN蚫O0 3麐諷 penc麐諷 S_MR 腫 XhV 匭 N*N b Y*N 孨蹚 6RP0 6蛻 nUS N 腫 XhV奲緥 n剉孨蹚 6RP 橯 eQUS N 腫 XhV0 0penc:

7、Spenc:SS+T 梺壩N:ggbL埨 NHNO b1u蜰:g菓茤剉詮愥 Oo 0 購汵酧o颯錘/fpeP0 耂 0WWII 0 婳俌烺齹xJT 蓩蜰:g 麐諷腫 XhV 剉P Rpenc:S 臺 ?S+T 亯麐諷腫 XhV 00 ,0 0 0 0 0N U L L ,0 0 0 0 0O P E N _ E X I S T I N G ,0 0 0 0 00 ,0 0 0 0 0N U L L ) ;i f ( h C o m = = I N V A L I D _ H A N D L E _ V A L U E )0 0M e s s a g e B o x ( c r e a t e

8、f i l ee r r or , e r r o r ) ;B O O Le r r o r = S e t u p C o m m ( h C o m , 1 0 2 4, 1 0 2 4 ) ;i f ( ! e r r o r )0 0M e s s a g e B o x ( s e t u p c o m me r r o r ) ;e r r o r = G e t C o m m S t a t e ( h C o m , & d c b ) ;i f ( ! e r r o r )0 0M e s s a g e B o x ( g e t c o m m s t a

9、 t e , e r r or ) ;d c b . B a u d R a t e = 2 4 0 0 ;d c b . B y t e S i z e = 8 ;d c b . P a r i t y = E V E N P A R I T Y ; / / N O P A R I T Y;d c b . S t o p B i t s = O N E S T O P B I T ;e r r o r = S e t C o m m S t a t e ( h C o m , & d c b ) ;孨0C R C !h 寶x梴U I N Tc r cv o i dc a l c c

10、r c ( B Y T Ec r c b u f )B Y T Ei ;c r c = c r cc r c b u f ;f o r ( i = 0 ; i1 ;c r c = c r c & 0 x 7 f f f ;i f( T T = = 1 )c r c = c r c 0 x a 0 0 1 ;c r c = c r c & 0 x f f f f ;N0penc 裇?z x a d d r = 1 1 ; / / 麐諷 0WW:N1 1 剉醈纇 h 坧 encz x n u m = 1 0 ; / / 麐諷 AS*N 怱悇 vpencw r i t e b u f

11、 2 0 = z x a d d r ;w r i t e b u f21=3;writebuf22=0;writebuf23=0;writebuf24=0;writebuf25=zxnum;crc=0 xffff;calccrc(writebuf20);calccrc(writebuf21);calccrc(writebuf22);calccrc(writebuf23);calccrc(writebuf24);calccrc(writebuf25);writebuf26=crc&0 xff;writebuf27=crc/0 x100;WriteFile(hCom,writebuf2,

12、8,&comnum,NULL);踁0penc 麐諷R e a d F i l e ( h C o m , w r i t e b u f , 5 + z x n u m * 2, & c o m n u m , N U L L ) ; / / 麐諷 z x n u m *N 怱恜 enc颯瀀燫 曪?Y tz 廭俌 0WWx 曪?0C R Cx 曪?R 璭0 惎婨 e 湒 Y tI 0鵞 bg(u 0 N*Ng x 0 _(uN tT O P緗NSP? 0Bl 0Lub? _裇O(uW T L 貜/fM F CT i a n C h o n g( ?V C 貧 Kb?: 2 9

13、9 7 6 6 9 )I 02# 3 |i梍 R0 轛Y 嶯2 0 0 6 - 0 1 - 1 40 1 : 4 2 : 3 6 |i;N b 購虘g N*N 孾 te 剉婳 PN 菑OgYuNE M A I L闟Y 賬O 衏汷 NN陙馷N?T坃YN弰 v N 孾 hQ 颯 褘C 韹 姍 Q 剉h t t p : / / w w w . p i c 1 6 . c o m / t i g a o / 0 4 1 0 13 / r s 4 8 5 . z i p鍿 N 莧鴙 sQ 剉噀鄗N0M o d b u sOS 畫薔M o d b u sOS 畫/f 擽(u 嶯 5uP6RhVN 剉 N

14、蛓 ?u 韹 ?0 惽廳 kOS 畫6RhV 鴙扤 KN 魰06RhV 蟸 1uQ軂婳俌錘*YQ孴 vQ 僛緥YKN 魰颯錘 愥 O 0 僛騗蟸 b:N N ?u 錧 Nh 芉 0g 哊僛NT 係 FUu剉6R 緥Y 颯錘迯 b 錧 NQ軂蹚 L 埰?N 裿 0dkOS 畫歔 IN 哊 N*N6RhV 齹茓O(u 剉坢 o觺刧,N僛霳/f 蟸菑 UO 蛓 Q軂蹚 L?愥 O 剉 0 僛蟘饛哊 N6RhV 鲖 Bl 繈顣 vQ 僛緥Y 剉菑z俌済轛擽 eg 陙 vQ 僛緥Y 剉鲖 Bl錘蔛7hKm 曪媣皨 U_ 0 僛 6R 歔哊坢 o遅h孴匭筟剉 lQqQh_ 0S_(W NM o d b u

15、 s Q軂N 愥 O 鰁dkOS 畫砆歔哊蟢*N6RhV榿夊 wS 悆霳剉緥Y0WW茓+Rc0WW 裇 eg 剉坢o砆歔亯uUO 蛓 L 埁 R 0 俌済 梺夀 V 擽6RhV u b 蚐垯酧 ov(uM o d b u s OS 畫裇鶴 0(WvQ 僛 Q軂NS+T 哊 M o d b u s OS 畫剉坢 ol 廱 c:N(WdkQ軂NO(u 剉 bS 觺刧 0 購蛓 l 廱 c_NibU哊 9hncwQSO 剉 Q軂銐砆倐 0WW0飴 1u 飴刜蔛 曪嬂 hKm 剉筫誰 010(WM o d b u s Q軂Nl 彄?h 芉剉 M o d b u s 鉙/fO(u NR S - 2 3

16、2 C |Q 筟 2NL 垾 c 鉙僛歔 IN 哊迯鉙剉垟 ?05u 0 酧鱏 MO0 O 搹鈒 yr 噑0GYvP!h 寶 06RhV 齹魐 b 蟸 1uM o d e m 膥 Q 06RhV 愥 OO(u;N蜰b/gsS 臢 N 緥Y;N 緥Y齹 R 薡 S O 搹錱鈰 0vQ 僛緥Y蜰緥Y9hnc;N 緥Y 錱鈰衏汷剉 pencO 鶴鴙擽蚐擽 0 xQ 媁剉;N 緥Y;N:g 孴颯 z 闚 h?0 xQ 媁剉蜰緥Y颯 z6RhV 0;N 緥Y 颯 US 靣孴蜰緥Y 愥 O_N 齹錘璬筫_孴bg 蜰緥Y 愥 O 0 俌済 US 靣 愥 O蜰緥Y 詮轛N 坢 oO:N 轛擽俌済/f 錘璬筫_

17、錱鈰剉 RNO 鸑 UO 轛擽 0M o d b u s OS 畫鷁藌哊;N 緥Y 錱鈰剉h_緥Y b璬0WW0 烺齹鉔x0bg 亯裇悇 vpenc0 N 曪嬂 hKm 遅 0蜰緥Y 轛擽坢 o_N1uM o d b u s OS 畫刧 bS 靊 nx亯 L 埁 R 剉遅0 鸑 UO 亯詮轛剉 penc0 孴 N 曪嬂 hKm 遅 0 俌済(W 坢 o6e 菑z-N 裇 u N 曪? b 蜰緥YN 齹 gbL 坴 QT 銷蜰緥Y 鷁藌 N 曪媹 mov奲僛O:N 轛擽裇?鶴籗 020(WvQ 僛|媁 Q軂Nl 彄?(WvQ 僛 Q軂N6RhVO(u 鵞 Ib/g 愥 OEe 鸑 UO6R 龕齹

18、 R 薡孴 vQ 僛6RhV 剉 愥 O 0 購 7h(WUS 靣剉 ?酧菑z-N6RhV 鈋颯O:N;N 緥Y_N 颯O:N 蜰緥Y 0 衏汷剉 Y*N 匭钀 怱愶 SAQ 笅T 鰁裇 u 剉 O 搹蹚z 0(W 坢 oMOM o d b u s OS 畫蚇衏汷哊;N蜰烻 R=Q軂 愥 O 筫誰/f鵞 I 0 俌済 N6RhV 裇? N 坢 o僛闟/fO:N;N 緥Yvg g 蜰蜰緥Y 梍 0R 轛擽 0T7hS_6RhV6e0R N 坢 o僛 鷁藌 N 蜰緥Y 轛擽h_v詮轛賬裇悇 v6RhV 030 錱鈰轛擽 hTg1錱鈰錱鈰坢 o-N 剉烺齹鉔xJTKN 珗?N 剉蜰緥Y 亯 gbL

19、圲 O 蛓烺齹 0penc 祂 S+T 哊蜰緥-?T鑲陚靷箦沐筵 h 衒? QJJ U h 衒? hZs QJJo(? h 衒? hZs QJJo(?NPr?:?Z?gd衒?靷? .0f? (j?gd 衒? ?hjBDhj?T?#D#J#L#b#?$ $,$=$R$?gd 衒? R$_$w$?%R%S% & &?VZnr?p(?gd 衒? p(?)?- *? +?,?R-?.j.?R/?0t0?1? 2?gd衒? 2p2?p3?H44?B5?B6?7? 88?X9v9?b:v:?gd衒? v:? ; ;?x?&=b=z=?6Te0R 轛擽坢 o剉 penc 遅-N購齹

20、JT 蓩;N 緥Y裇 u 哊繬 HN 曪?0;N 緥Y 擽(uz 廭梍 0R _畫剉轛擽TxQ 媁剉 Y t 菑z/f 蛻裇坢 o b蕥璭裇賬蜰緥Y 剉坢 ovJT 賬蚫OXT 050penc 遅penc 遅/f1u$N*NASmQ 蹚 6Rpe 茤T 刧 b 剉 凈 V0 0 . . . F F 09hncQ軂 O 搹!j_購颯錘/f1u N 鵞 A S C I I W&膥 b b1u NR T U W&膥 b 0蜰;N 緥Y 裇賬蜰緥Y 坢 o剉 penc 遅 S+TD 枲 R 剉酧 o蜰緥Y 臺?u 嶯蹚 L 坓 bL?u 烺齹鉔xb 歔 IN 剉b:N 0購 S 靊哊

21、a?N 迯韣剉腫 XhV0WW亯 Y ty 槃 vpe 顅遅-N 瀃 E 杙 encW倐 pe 0婳俌俌済;N 緥Y 梺壩 N 緥Y 麐諷N 膥軴c 腫 XhV烺齹鉔x0 3penc 遅c 歔哊 w 嵥 Y 腫 XhV 錘蔛亯麐剉腫 XhVpe 蠎 0 俌済;N 緥Y 橯 N 膥蜰緥Y 剉腫 XhV烺齹鉔x1 0 ASmQ 蹚 6Rpenc 遅 Rcf 哊亯橯剉 w 嵥 Y 腫 XhV錘蔛亯橯剉腫 XhVpe 蠎penc 遅剉 pencW倐 pe亯橯 eQ 腫 XhV 剉 penc 0俌済g 曪嬔 Su蜰蜰緥Y 詮轛剉 penc 遅 S+T 鲖 Bl 剉 penc 0 俌済 g 曪嬔 Sudk

22、 遅 S+T N _畫鉔x;N緥Y 擽(uz 廭颯錘(ueg$R 璭菓諷N NekL 埁 R 0(W 術蛓坢 o-Npenc 遅颯錘/fNX(W 剉0 暒 0 婳俌;N 緥Y 亯 Bl 蜰緥Y 轛擽 愥 O 婲鯪皨 U_烺齹鉔x0 B ASmQ 蹚 6R蜰緥YN 楙 NUOD 枲 R 剉酧 o 060 曪嬂 hKm 遅h 芉剉 M o d b u s Q軂g$N 蛓 曪嬂 hKm 筫誰 0 曪嬂 hKm 遅剉匭筟茐b悇 v 纇Km 筫誰歔 0A S C I IS_?uA S C I I !j_OW& 曪嬂 hKm 遅 S+T$N*NA S C I I W& 0 購/fO(uL

23、R C祣 T 桻暲 hKm筫誰鵞坢 o匭筟梴梍鶴剉NS 靊 _薡剉扱鱏&蔛轛 f 廱 cL? 0L R C W&D 枲 R(W 轛 f 廱 cL?MRb?0R T US_?uR T U !j_OW& 曪嬂 hKm 遅 S+T N1 6 B i t s P( (u$N*N8 MO 剉 W&eg 瀃皊) 0 曪嬂 hKm 遅剉匭筟/f ?菑鵞坢 o匭筟蹚 L 埅_痵桻暲 hKm 筫誰梍鶴剉 0C R C 遅 D 枲 R(W 坢 o剉 gT鹠燫鰁 HQ/fNOW倐 6qT/f 貧 W倐 0EeC R C 剉貧 MOW倐/f 裇悎 mo剉 gT N*NW倐 070W&a

24、mp;剉迯韣 O 搹S_坢 o(Wh 芉剉 M o d b u s 鹼 RQ軂 O 搹鰁蟢*NW& bW倐錘俌N 筫_裇?蜰鎉 0R 骃gNOgHeMO. . .g 貧 gHeMOO(uA S C I I W&鰁MO 剉廭 R/fgGYvP!h 寶/T薡MO1234567GYvPMOPbkMO鄀 GYvP!h 寶/T薡MO1234567PbkMOPbkMOO(uR T U W&鰁MO 剉廭 R/fgGYvP!h 寶/T薡MO12345678GYvPMOPbkMO鄀 GYvP!h 寶/T薡MO12345678PbkMOPbkMO踁0 曪嬂 hKm 筫誰h 芉剉 M o d

25、 b u s 2NL 圦軂菓(u$N 蛓 曪嬂 hKm 筫誰 0GYvP!h 寶鵞蟢*NW&龕颯(u纇 KmL R C bC R C擽(u 嶯te*N 坢 o 0 僛霳龕/f(W 坢 o裇怣 R1u;N 緥Yu 剉蜰緥Y(W6e 菑z-N 纇 Km 蟢*NW&孴 te*N 坢 o 0(u7b 亯賬;N 緥YM 憂 N 剺 HQ 歔 IN 剉厤鰁鰁魰魰敄購*N 鰁魰魰敄亯硩 Y?錘O 鸑 UO 蜰緥Y 龕齹O:Nck8蚐擽 0 俌済蜰緥YKm0R N O 搹 曪?坢 o N O6e_NN O T;N 緥YO 鶴轛擽 0 購 7h 厤鰁婲鯪 鎵裇;N 緥Yeg Y t 曪?0 裇_

26、NX(W 剉蜰緥Y 剉 0WW_N Ou 厤鰁 010GYvP!h 寶(u7b 颯錘 M 憂6RhV/fGY bvP!h 寶 b 鄀!h 寶 0 購 砆歔哊蟢*NW&-N 剉 GYvP!h 寶 MO/f 俌 UO 緥 n剉俌済c 歔哊 GY bvP!h 寶1 剉 MOpe 梴 0R 蟢*NW&剉 MOpe-NA S C I I !j_7 *NpencMOR T U -N8 *NpencMO 0 婳俌 R T U W&-NS+T 錘N8 *NpencMO11000101te*N1 剉 pe 顅/f4 *N 0 俌済縊(u 哊 vP!h 寶剉 GYvP!h 寶 MO /f0

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