C#使用ModbusTcp协议与西门子1200PLC通讯

ModbusTCPTest.vshost caused an Unknown exception type (0xe0434f4d) in module KERNELBASE.dll at 0023:7561c54f. Exception handler called in ExceptionAttacher.cpp - TopUnhandledExceptionFilter. Error occurred at 2/11/2018 10:36:12. D:\DeskTop\CSharpModBusExample\ModbusTCPTest\bin\Debug\ModbusTCPTest.vshost.exe, run by huanggc. Operating system: unknown Windows version (6.1.7601). 8 processor(s), type 586. 46% memory in use. 0 MBytes physical memory. 0 MBytes physical memory free. 0 MBytes paging file. 0 MBytes paging file free. 2048 MBytes user address space. 1810 MBytes user address space free. Context: EDI: 0x05692690 ESI: 0x0789db9c EAX: 0x0789db14 EBX: 0xe0434f4d ECX: 0x00000001 EDX: 0x00000000 EIP: 0x7561c54f EBP: 0x0789db64 SegCs: 0x00000023 EFlags: 0x00000216 ESP: 0x0789db14 SegSs: 0x0000002b Bytes at CS:EIP: c9 c2 10 00 cc cc cc cc cc 8b ff 55 8b ec 56 8b Stack: 0x0789db14: e0434f4d 00000001 00000000 7561c54f MOC.........O.au 0x0789db24: 00000001 80131537 02000038 0789db40 ....7...8...@... 0x0789db34: 5882f404 0789db48 02000038 0789db4c ...XH...8...L... 0x0789db44: 5882f877 57f90e24 0789db5c 588c7b6f w..X$..W\...o{.X 0x0789db54: 57f73f18 00000130 0789db6c 588c7b96 .?.W0...l....{.X 0x0789db64: 0789dbc4 588c7d1c e0434f4d 00000001 .....}.XMOC..... 0x0789db74: 00000001 0789db9c afbac1f9 0289c360 ............`... 0x0789db84: 05692690 00000000 077a3000 58838a6a .&i......0z.j..X 0x0789db94: 00000001 05692690 80131537 0789d554 .....&i.7...T... 0x0789dba4: 00000001 00000001 0789db7c 0789d554 ........|...T... 0x0789dbb4: 0789dc7c 58986ada f0bf6705 00000000 |....j.X.g...... 0x0789dbc4: 0789dc88 588c1950 0289c360 00000000 ....P..X`....... 0x0789dbd4: 00000000 afbac6b5 0289c354 0289c360 ........T...`... 0x0789dbe4: 0789dd50 a84fbdc9 588221b8 0789df1c P.....O..!.X.... 0x0789dbf4: 00000000 00000001 0789dc0c 00000000 ................ 0x0789dc04: 05692690 00000000 0789dbdc 0289c354 .&i.........T... 0x0789dc14: 0789dbe0 0289c360 0789dbe4 0789dd50 ....`.......P... 0x0789dc24: 0789dc88 0789dca4 0789dc90 0789dc8c ................ 0x0789dc34: 0789dc88 0789dbd4 588c18a5 00000010 ...........X.... 0x0789dc44: 05692690 58889f20 0789dc70 0789dc6c .&i. ..Xp...l... 0x0789dc54: 00000001 00000000 00000001 00000001 ................ 0x0789dc64: 05692690 05692690 0289c3a8 0789dbec .&i..&i......... 0x0789dc74: 0289c360 0789dbd8 0789e04c 588c1951 `.......L...Q..X 0x0789dc84: 00000001 0789dca4 5866f3c8 0289c348 ..........fXH... 0x0789dc94: 0289c354 00000007 0789dd4c 0789dd64 T.......L...d... 0x0789dca4: 0789dd74 57f4f458 00000000 028143fc t...X..W.....C.. 0x0789dcb4: 0789dd50 00000000 00000000 00000000 P............... 0x0789dcc4: 00000000 00000000 00000000 00000000 ................ 0x0789dcd4: 00000000 00000000 00000000 00000000 ................ 0x0789dce4: 00000000 00000000 00000000 00000000 ................ 0x0789dcf4: 00000000 00000000 00000000 00000000 ................ 0x0789dd04: 00000000 00000000 00000000 00000000 ................ 0x0789dd14: 00000000 00000000 00000000 00000000 ................ 0x0789dd24: 00000000 00000000 a84fbdc9 0289c348 ..........O.H... 0x0789dd34: 00000000 0789dcb8 0789dcc4 00000000 ................ 0x0789dd44: 00000000 00000000 00000000 0789dcb8 ................ 0x0789dd54: 0789dcc4 00000000 00000000 00000000 ................ 0x0789dd64: 0789dcb8 02892f98 0289c348 0789de30 ...../..H...0... 0x0789dd74: 0789ddac 583f0530 028143fc 0289c308 ....0.?X.C...... 0x0789dd84: 0289c348 00000000 00000000 00000000 H............... 0x0789dd94: 00000000 00000000 0281c614 02892f98 ............./.. 0x0789dda4: 0289c348 0789de30 0789ddbc 583c09b8 H...0.........<X 0x0789ddb4: 028143fc 0281d8dc 0789de3c 00793fe6 .C......<....?y. 0x0789ddc4: 00000001 0789de34 0289c348 00000000 ....4...H....... 0x0789ddd4: 0289b2c8 0289b2c8 0000000a 0289b274 ............t... 0x0789dde4: 0289b274 00000000 00000000 00000000 t............... 0x0789ddf4: 00000000 0000000a 02820778 0281d8dc ........x....... 0x0789de04: 00000000 00000000 00000000 00000000 ................ 0x0789de14: 00000000 00000000 00000000 00000000 ................ 0x0789de24: 00000000 00000000 00000000 02892f98 ............./.. 0x0789de34: 0282516c 02820778 0789de58 55fe4170 lQ..x...X...pA.U 0x0789de44: 02892f98 0282510c 0006092c 02820778 ./...Q..,...x... 0x0789de54: 02892f98 0789de68 55fdf55a 02820778 ./..h...Z..Ux... 0x0789de64: 02892f98 0789de84 56576f24 00000113 ./......$oWV.... 0x0789de74: 000001e8 00100000 0000000d 00000032 ............2... 0x0789de84: 0789df08 56547733 02820778 0000000d ....3wTVx....... 0x0789de94: 000d0032 000d0032 000d0032 000d0032 2...2...2...2... 0x0789dea4: afbac495 0789e0e4 588820e1 5882daa0 ......... .X...X 0x0789deb4: 58882432 afbafad9 004f1bec 00000000 2$.X......O..... 0x0789dec4: 00000000 000d0032 00000000 00000032 ....2.......2... 0x0789ded4: 00000000 00000113 000001e8 0000000d ................ 0x0789dee4: 00000032 00000000 00000000 00000000 2............... 0x0789def4: 00000000 ffffffff 0789e04c 00000202 ........L....... 0x0789df04: 05692690 0789df68 5687a152 00000001 .&i.h...R..V.... 0x0789df14: 00100000 a84fbdc9 58824980 0789e150 ......O..I.XP... 0x0789df24: 0789dfdc 00000000 0789e00c 58d10634 ............4..X 0x0789df34: ffffffff 588b6cdc 0789df68 000b0818 .....l.Xh....... 0x0789df44: 0789dfe0 02820778 00000000 0789e13c ....x.......<... 0x0789df54: 0789e2c4 0789e13c 0789e04c 0789dfe0 ....<...L....... 0x0789df64: 02820848 0789dfac 56878921 02820778 H.......!..Vx... 0x0789df74: 00000000 0000000f 5882daa0 588b6b68 ...........Xhk.X 0x0789df84: afbafa25 0562ebc8 00000000 00000000 %.....b......... 0x0789df94: 00000000 00000000 0789e138 0789e04c ........8...L... 0x0789dfa4: 02820778 02820848 0789dfb8 560125b0 x...H........%.V 0x0789dfb4: 0789dfe0 0789dfc0 560186a0 0789dfd4 ...........V.... 0x0789dfc4: 56018621 0789e04c 02820848 0789e004 !..VL...H....... 0x0789dfd4: 0789e014 5654a1a7 02820848 0006092c ......TVH...,... 0x0789dfe4: 00000202 00000000 000d0032 00000000 ........2....... 0x0789dff4: 00000000 00000000 00000000 00000000 ................ 0x0789e004: 5898347a 0789e04c 05692690 00000000 z4.XL....&i..... 0x0789e014: 0789e030 58821b4c 000d0032 00000000 0...L..X2....... 0x0789e024: 00000202 ffffffff 588299bc 0789e0b0 ...........X.... 0x0789e034: 58838dde 0789e13c 00000003 0789e100 ...X<........... 0x0789e044: 00000000 55fc74ec 0789e0a0 588c97bc .....t.U.......X 0x0789e054: 0789e150 afbafa8d 004f1bec 00000000 P.........O..... 0x0789e064: 0789e2d0 0789e150 05692690 00000000 ....P....&i..... 0x0789e074: 00000000 00000000 00000000 00000001 ................ 0x0789e084: 00000000 e0434f4d 0789e04c 00000000 ....MOC.L....... 0x0789e094: afbafa8d 0789e04c 0789d554 0789e1c4 ....L...T....... 0x0789e0a4: 58986ada f0b0941d 00000000 0789e0d0 .j.X............ 0x0789e0b4: 588b6962 0789e13c 00000003 0789e100 bi.X<........... 0x0789e0c4: 00000000 55fc74ec 00000000 0789e1d0 .....t.U........ 0x0789e0d4: 588b6b1a 55fc74ec 0789e130 0000000c .k.X.t.U0....... 0x0789e0e4: 00000000 00000000 0789e100 00000000 ................ 0x0789e0f4: 00000000 00000000 0789e2d0 0006092c ............,... 0x0789e104: 02829c9c 00000000 00000000 00000000 ................ 0x0789e114: 00000000 00000000 00000000 00000000 ................ 0x0789e124: 00000000 00000000 00000000 000d0032 ............2... 0x0789e134: 00000000 00000202 afbafbed 0562ebc8 ..............b. 0x0789e144: 0052db60 004f1bec a84fbdc9 588248e0 `.R...O...O..H.X 0x0789e154: 0789e2f0 0789e18c 00000001 05692690 .............&i. 0x0789e164: 00000000 0789e1e4 0789e17c 0789e198 ........|....... 0x0789e174: 77010230 00000028 0789e1e4 76fa6d91 0..w(........m.v 0x0789e184: 0789e2c4 00000001 02829c9c 00000000 ................ 0x0789e194: 00000000 0000000c 0789e2f0 00000000 ................ 0x0789e1a4: 05694acc 00000070 00000000 004f1c03 .Ji.p.........O. 0x0789e1b4: 55fc74ec 0789e120 0789e13c afbafbed .t.U ...<....... 0x078