"# VisualHMI Lua API \u5927\u5168\uff1a\u56de\u8c03\/\u901a\u4fe1\/\u5bc4\u5b58\u5668\u8bfb\u5199\u51fd\u6570\u901f\u67e5\u8868\n\n> 2026-08-04 | 2026-08-05\n> https:\/\/www.modbus.cn\/51496.html\n\n**LUA \u811a\u672c, \u4e32\u53e3\u5c4f\/HMI \u5f00\u53d1**\n\n---\n\n\u8fd9\u662f VisualHMI \u5e73\u53f0 Lua \u811a\u672c\u7684**\u5b8c\u6574 API \u624b\u518c**\uff1a10 \u4e2a\u7cfb\u7edf\u56de\u8c03 + 32 \u4e2a\u8bfb\u5199\u5bc4\u5b58\u5668\u51fd\u6570 + 10 \u4e2a\u7ed8\u56fe\u51fd\u6570\uff0c\u5171 52 \u4e2a\u63a5\u53e3\u3002\u5199\u811a\u672c\u524d\u5148\u7ffb\u8fd9\u7bc7\uff0c\u6bd4\u9010\u4e2a\u7ffb\u6559\u7a0b\u5feb\u3002\u5e73\u53f0\u57fa\u4e8e Lua 5.3\u3002\n\n## 0. \u57fa\u7840\uff1a\u81ea\u52a8\u751f\u6210\u7684 main.lua\n\n\u83dc\u5355 \u5de5\u7a0b\u2192\u811a\u672c\u7f16\u7a0b \u9ed8\u8ba4\u751f\u6210 main.lua\uff0c\u81ea\u52a8\u5e26\u534f\u8bae\u5bf9\u5e94\u7684\u6570\u636e\u7c7b\u578b\u5b9a\u4e49\uff1a\n\n```\nENCRYPT_ = 0        -- LUA\u811a\u672c\u52a0\u5bc6\u5f00\u5173\n-- \u6570\u636e\u7c7b\u578b\u5b9a\u4e49\uff08\u968f\u534f\u8bae\u53d8\u5316\uff0c\u4ee5\u4e0b\u4e3a Modbus\uff09\nVT_LW = 1           -- \u5185\u90e8\u53d8\u91cf\nVT_RW = 2           -- FLASH\u6389\u7535\u5b58\u50a8\nVT_0x = 10          -- \u7ebf\u5708\nVT_1x = 11          -- \u8f93\u5165\u70b9\uff08\u79bb\u6563\u8f93\u5165\uff09\nVT_3x = 12          -- \u8f93\u5165\u5bc4\u5b58\u5668\nVT_4x = 13          -- \u4fdd\u6301\u5bc4\u5b58\u5668\n\nfunction on_init() end\nfunction on_run(screen) end\nfunction on_update(slave,vtype,addr) end\nfunction on_draw(screen_id,control_id) end\n```\n\nFX3U \u534f\u8bae\u4e0b\u8fd8\u4f1a\u6709 VT_M\uff08\u5185\u90e8\u7ee7\u7535\u5668\uff09\u3001VT_D\uff08D\u5bc4\u5b58\u5668\uff09\u7b49\u7c7b\u578b\u3002on_update \u91cc\u7684 vtype\u3001get\/set \u51fd\u6570\u7b2c\u4e00\u4e2a\u53c2\u6570\u90fd\u7528\u8fd9\u4e9b\u5e38\u91cf\u3002\n\n## 1. \u5e38\u7528\u56de\u8c03\u51fd\u6570\uff0810 \u4e2a\uff09\n\n\u56de\u8c03\u89e6\u53d1\u65f6\u673a\u8981\u70b9`on_init()`\u7cfb\u7edf\u52a0\u8f7d LUA \u540e\u7acb\u5373\u6267\u884c\u4e00\u6b21\u521d\u59cb\u5316\u3001dofile \u52a0\u8f7d\u5176\u4ed6 lua\u3001\u5199\u521d\u503c`on_run(screen)`\u6bcf\u4e2a\u4e3b\u5faa\u73af\u5468\u671f\u81ea\u52a8\u8c03\u7528\u6838\u5fc3\u5468\u671f\u8c03\u5ea6\u3002\u7981\u6b62 delay_ms\/\u957f\u5faa\u73af\/\u7f51\u7edc\u540c\u6b65\/\u5185\u90e8 set_run_cycle()\uff1bModbus \u4e3b\u7ad9\u65f6\u522b\u9ad8\u9891\u5199\u4ece\u673a\uff08\u603b\u7ebf\u5835\u585e\uff09`on_update(slave,vtype,addr)`\u5bc4\u5b58\u5668\/\u53d8\u91cf\u503c\u53d8\u5316\u65f6\u89e6\u53d1\u6570\u636e\u9a71\u52a8\u4e0d\u8f6e\u8be2\u3002\u4e32\u53e3\/Modbus \u4e3b\u7ad9\u5199\u5165\u3001on_update \u5185 set_xxx \u4e0d\u89e6\u53d1\uff08\u9632\u9012\u5f52\uff09\uff1b\u53ef\u7528\u5168\u5c40 EN_ON_UPDATE_API_CB \u63a7\u5236\u5f00\u5173`on_screen_change(screen)`\u753b\u9762\u5207\u6362\u5b8c\u6210\u540e\u521d\u59cb\u5316\/\u72b6\u6001\u540c\u6b65\/\u8d44\u6e90\u52a0\u8f7d`on_press(state,x,y)`\u89e6\u6478\u72b6\u6001\u53d8\u5316\uff0c\u6bcf 100ms \u6700\u591a\u4e00\u6b21state: 0\u62ac\u8d77\/1\u6309\u4e0b\/2\u957f\u6309\uff08\u6309\u4e0b\u53ea\u89e6\u53d1\u4e00\u6b21\uff09\uff1b\u5e95\u5c42\u5750\u6807\uff0c\u70b9\u7a7a\u767d\u4e5f\u89e6\u53d1`on_usb_inserted(driver)`U \u76d8\u63d2\u5165\u8bc6\u522bdriver \u4e3a\u76d8\u7b26\uff0cM \u7cfb\u5217\u662f \"2:\"\uff0c\u7528\u5168\u5c40\u53d8\u91cf\u8bb0\u5f55`on_usb_removed()`U \u76d8\u62d4\u51fa\u6e05\u76d8\u7b26\u5168\u5c40\u53d8\u91cf`on_sd_inserted(dir)`SD \u5361\u63d2\u5165\u8bc6\u522bdir \u76d8\u7b26\uff0cM \u7cfb\u5217\u662f \"1:\"`on_sd_removed()`SD \u5361\u62d4\u51fa\u6e05\u76d8\u7b26\u5168\u5c40\u53d8\u91cf`on_parse_timestamp(screen,control,timestamp)`\u544a\u8b66\/\u6570\u636e\/\u64cd\u4f5c\u8bb0\u5f55\u8868\u683c\u65f6\u95f4\u5b57\u6bb5\u683c\u5f0f\u5316control \u5fc5\u987b\u22600\uff1b\u914d make_datetime(timestamp) \u8fd4\u56de\u81ea\u5b9a\u4e49\u65f6\u95f4\u4e32\n\n## 2. \u8bfb\u5199\u5bc4\u5b58\u5668\u51fd\u6570\uff0832 \u4e2a\uff09\n\n### 2.0 \u5148\u8bf4\u4e24\u4e2a\u5173\u952e\u673a\u5236\uff08\u6240\u6709 set\/get \u901a\u7528\uff09\n\n**\u673a\u5236\u4e00\uff1aget_xxx() \u662f\u96f6\u901a\u4fe1\u5f00\u9500\u7684\u3002**get \u7cfb\u5217\u5168\u90e8\u4ece HMI \u672c\u5730\u7f13\u5b58\uff08\u5185\u5b58\u955c\u50cf\uff09\u8bfb\uff0c\u4e0d\u4ea7\u751f\u4e32\u53e3\u5e27\u3002HMI \u540e\u53f0\u4efb\u52a1\u6309\u5de5\u7a0b\u914d\u7f6e\u7684\u8f6e\u8be2\u5468\u671f\u81ea\u52a8\u4ece PLC \u8bfb\u901a\u4fe1\u53d8\u91cf\uff08\u5982 Modbus \u7684 VT_3x\/VT_4x\uff09\u5e76\u7f13\u5b58\u3002\u753b\u9762\u63a7\u4ef6\u7ed1\u5b9a\u4e86\u67d0\u5730\u5740\uff0c\u8be5\u5730\u5740\u5c31\u81ea\u52a8\u8fdb\u8f6e\u8be2\u5217\u8868\uff1b\u811a\u672c\u8981\u8bfb\u6ca1\u88ab\u5de5\u7a0b\u5f15\u7528\u7684\u5730\u5740\uff0c\u7528 start_read \u663e\u5f0f\u8bf7\u6c42\u540c\u6b65\u3002\n\n**\u673a\u5236\u4e8c\uff1aset_xxx() \u4e0d\u4e00\u5b9a\u53d1\u4e32\u53e3\u5e27\u3002**\u53ea\u6709\u4e24\u4e2a\u6761\u4ef6\u540c\u65f6\u6ee1\u8db3\u624d\u4e3b\u52a8\u53d1\u62a5\u6587\uff1a\u2460HMI \u662f\u4e3b\u673a\u6a21\u5f0f\uff08Modbus Master\/DCBUS\/XGUS\uff09\uff1b\u2461\u4e32\u53e3\u901a\u77e5\u6ca1\u88ab set_notify(0) \u7981\u6b62\u3002\u4ece\u673a\u6a21\u5f0f\u4e0b set \u53ea\u66f4\u65b0\u672c\u5730\u955c\u50cf\u3002\n\n### 2.1 \u901a\u4fe1\u63a7\u5236\n\n\u51fd\u6570\u53c2\u6570\u8bf4\u660e`set_notify(enable)`0\u7981\u6b62\/1\u4f7f\u80fd(\u9ed8\u8ba4)\u5168\u5c40\u4e32\u53e3\u53d1\u9001\u901a\u77e5\u5f00\u5173\u3002set_notify(0) \u540e set_xxx \u4e0d\u53d1\u4e32\u53e3\u6307\u4ee4\uff0c\u6539\u5b8c\u6062\u590d set_notify(1)`select_slave(slave_id)`\u4ece\u673a\u7d22\u5f15 0 \u8d77\u591a\u4ece\u673a\u6a21\u5f0f\u4e0b\u5207\u6362\u540e\u7eed get\/set \u8bbf\u95ee\u7684\u4ece\u673a\u3002slave_id \u662f\u5de5\u7a0b\u4ece\u673a\u5217\u8868\u6570\u7ec4\u4e0b\u6807\uff0c\u4e0d\u662f Modbus \u7ad9\u53f7`set_endian(en)`0\u5927\u7aef(\u9ed8\u8ba4)\/1\u5c0f\u7aef\u591a\u5b57\u8282\u6570\u636e\uff08uint16\/32\/float\uff09\u4e0e\u4ece\u673a\u4ea4\u6362\u65f6\u7684\u5b57\u8282\u5e8f\u3002\u4ec5\u901a\u4fe1\u534f\u8bae\u6d89\u53ca\u591a\u5b57\u8282\u65f6\u751f\u6548`start_read(index,vtype,addr,quantity,cycle,cycle_run,mode)`index 0~127\uff1bquantity 1~120\uff1bcycle \u8f6e\u8be2\u500d\u6570(\u9ed8\u8ba40=\u6bcf\u5468\u671f)\uff1bcycle_run \u5468\u671f\u5185\u7b2c\u51e0\u6b21(0-based)\uff1bmode 0\u6301\u7eed\/1\u4ec5\u4e00\u6b21\u4e3b\u673a\u6a21\u5f0f\u540e\u53f0\u81ea\u52a8\u8f6e\u8be2\u3002\u65e0\u8fd4\u56de\u503c\uff0c\u6570\u636e\u7528 get_xxx \u8bfb\u7f13\u5b58\u3002mode=1 \u9700\u5148 create_resp_que()`stop_read(index)`\u4efb\u52a1\u7d22\u5f15\u505c\u6b62\u6307\u5b9a\u540e\u53f0\u8bfb\u53d6\u4efb\u52a1\uff0c\u7f13\u5b58\u4fdd\u7559\u6700\u540e\u503c`stop_all_read()`-\u505c\u6389\u6240\u6709\u811a\u672c\u542f\u52a8\u7684\u8bfb\u53d6\u4efb\u52a1`set_auto_read(en)`1\u542f\u7528(\u9ed8\u8ba4)\/0\u7981\u6b62\u753b\u9762\u7ed1\u5b9a\u53d8\u91cf\u81ea\u52a8\u8f6e\u8be2\u7684\u603b\u5f00\u5173\u30020 \u540e\u5b8c\u5168\u7531 start_read \u63a5\u7ba1`create_resp_que()`-\u521b\u5efa\u54cd\u5e94\u961f\u5217\uff0c\u914d\u5408 start_read(mode=1) \u505a\u5355\u6b21\u6309\u9700\u8bfb\u53d6`on_cmd_resp(slave,vtype,addr,count,ret,wr)`ret 0\u6210\u529f\/1\u5f02\u5e38\uff1bwr 0\u8bfb\/1\u5199\u4e3b\u673a\u6a21\u5f0f\u901a\u4fe1\u7ed3\u679c\u5f02\u6b65\u56de\u8c03\uff0c\u6536\u5230\u54cd\u5e94\u6216\u8d85\u65f6\u89e6\u53d1\u3002\u5224\u65ad\u5355\u6b21\u8bfb\u5199\u6210\u8d25`set_slave_site(idx,slave_id)`idx \u4ece\u673a\u7d22\u5f15\uff1bslave_id \u65b0\u7ad9\u53f7(Modbus 1~247)\u8fd0\u884c\u65f6\u52a8\u6001\u6539\u4ece\u673a\u7ad9\u53f7\uff0c\u9002\u5e94\u73b0\u573a\u7ec4\u7f51\n\n### 2.2 \u4f4d\u64cd\u4f5c\n\n\u51fd\u6570\u53c2\u6570\u8bf4\u660e`set_bit(vtype,addr,value,count)`value 16\u4f4d\u65e0\u7b26\u53f7\uff0c\u4f4e count \u4f4d\u5bf9\u5e94\u76ee\u6807\u4f4d(bit0\u2192addr,bit1\u2192addr+1\u2026)\uff1bcount \u9009\u586b 1~16\u6279\u91cf\u4f4d\u5199\u5165\u3002Modbus \u7ebf\u5708\u3001FX3U \u7684 X\/Y\/S\/M \u90fd\u884c\u3002\u4e00\u6b21\u901a\u4fe1\u5199\u591a\u4e2a\u5f00\u5173`get_bit(vtype,addr)`-\u8bfb\u5355\u4e00\u4f4d\uff0c\u8fd4\u56de 0\/1\u3002\u4ece\u672c\u5730\u7f13\u5b58\u8bfb\uff0c\u96f6\u901a\u4fe1\u5f00\u9500\n\n### 2.3 \u6570\u503c\u8bfb\u5199\uff0816\/32\/64 \u4f4d\uff09\n\n\u51fd\u6570\u6570\u503c\u8303\u56f4\u5730\u5740\u8de8\u5ea6`set\/get_uint16(vtype,addr,value)`0~65535\uff0c\u8d85\u51fa\u622a\u65ad & 0xFFFF1 \u4e2a\u5bc4\u5b58\u5668`set\/get_int16(vtype,addr,value)`-32768~+32767\uff0c\u8d85\u51fa\u622a\u65ad & 0xFFFF1 \u4e2a\u5bc4\u5b58\u5668`set\/get_uint32(vtype,addr,value)`0~4294967295\uff0c\u622a\u65ad & 0xFFFFFFFF2 \u4e2a\u5bc4\u5b58\u5668`set\/get_int32(vtype,addr,value)`-2^31~2^31-12 \u4e2a\u5bc4\u5b58\u5668`set\/get_uint64(vtype,addr,value)`0~2^64-14 \u4e2a\u5bc4\u5b58\u5668`set\/get_int64(vtype,addr,value)`-2^63~2^63-14 \u4e2a\u5bc4\u5b58\u5668`set\/get_float(vtype,addr,value)`IEEE 754 \u5355\u7cbe\u5ea62 \u4e2a\u5bc4\u5b58\u5668`set\/get_double(vtype,addr,value)`IEEE 754 \u53cc\u7cbe\u5ea64 \u4e2a\u5bc4\u5b58\u5668\n\n\u6240\u6709 get \u7cfb\u5217\u8bfb\u672c\u5730\u7f13\u5b58\uff1bset \u7cfb\u5217\u901a\u4fe1\u89e6\u53d1\u770b\u300c\u673a\u5236\u4e8c\u300d\u3002\n\n### 2.4 \u5b57\u7b26\u4e32\u4e0e\u6279\u91cf\n\n\u51fd\u6570\u53c2\u6570\u8bf4\u660e`set_string(vtype,addr,str)`str \u6700\u5927 2K \u5b57\u8282\uff0cUTF-8 \u6216 GBK\u5199\u5b57\u7b26\u4e32\u5230\u5730\u5740\u5e8f\u5217`get_string(vtype,addr,len)`len \u9009\u586b\uff0c\u9ed8\u8ba4 128 \u5b57\u8282\uff0c\u6700\u5927 2048\u8bfb\u5b57\u7b26\u4e32\uff0c\u81ea\u52a8\u5728  \u622a\u65ad`set_uint16_ex(vtype,addr,value1,...,valueN)`\u6700\u591a 120 \u4e2a\u503c\u53ef\u53d8\u53c2\u6570\u6279\u91cf\u5199\u8fde\u7eed\u5bc4\u5b58\u5668\uff0c\u9002\u5408\u56fa\u5b9a\u53c2\u6570\u96c6`set_array(vtype,addr,buff)`buff \u4e3a Lua table\uff08word \u6570\u7ec4\uff09\uff0c\u6700\u591a 120 \u5b57table \u6279\u91cf\u5199\uff0c\u9002\u5408\u7a0b\u5e8f\u5316\u751f\u6210\/\u52a8\u6001\u6570\u636e\u3002\u4e0e set_uint16_ex \u533a\u522b\u5728\u4f20\u53c2\u65b9\u5f0f\n\n## 3. \u7ed8\u56fe\u51fd\u6570\uff0810 \u4e2a\uff09\n\n\u5168\u90e8 draw_xxx \u5fc5\u987b\u5728 `on_draw(screen_id,control_id)` \u56de\u8c03\u91cc\u8c03\u7528\u624d\u751f\u6548\uff0c\u63a7\u4ef6 ID \u5fc5\u987b \u2260 0\u3002\u56fe\u5c42\u6309\u63a7\u4ef6 Z \u8f74\uff08\u7f16\u8f91\u5668\u53e0\u653e\u987a\u5e8f\uff09\u7ba1\u7406\uff0c\u9760\u5224\u65ad control_id \u5206\u5c42\u7ed8\u5236\u3002\u4e3b\u52a8\u5237\u65b0\u8c03 `redraw()`\u3002\n\n\u51fd\u6570\u53c2\u6570\u8bf4\u660e`set_pen_color(color)`RGB565\uff1a\u9ad85\u4f4dR(0~31)\/\u4e2d6\u4f4dG(0~63)\/\u4f4e5\u4f4dB(0~31)\u8bbe\u7f6e\u753b\u7b14\uff08\u524d\u666f\uff09\u989c\u8272\u3002\u7ea2 0xF800\u3001\u7eff 0x07E0\u3001\u84dd 0x001F\u3001\u767d 0xFFFF\u3001\u9ed1 0x0000`draw_line(x0,y0,x1,y1,width)`width 1~10\u753b\u76f4\u7ebf\uff0c\u989c\u8272\u53d6\u5f53\u524d\u753b\u7b14`draw_rect(x0,y0,x1,y1,fill)`fill 1\u586b\u5145\/0\u8fb9\u6846\u5de6\u4e0a\u89d2+\u53f3\u4e0b\u89d2\u5750\u6807`draw_rect_alpha(x0,y0,x1,y1,alpha)`alpha 0~255\uff080\u900f\u660e\/255\u4e0d\u900f\u660e\uff09\u534a\u900f\u660e\u5b9e\u5fc3\u77e9\u5f62\uff0c\u906e\u7f69\u5c42\u5e38\u7528`draw_circle(x,y,r,fill)`fill 0\u5b9e\u5fc3\/\u975e0\u7a7a\u5fc3(\u503c\u4f5c\u7ebf\u539a)\u5706\u5fc3+\u534a\u5f84`draw_ellipse(x0,y0,x1,y1,fill)`fill 0\u5b9e\u5fc3\/\u975e0\u7a7a\u5fc3\u5916\u63a5\u77e9\u5f62\u5b9a\u4e49\u692d\u5706`draw_image(image_id,frame_id,dstx,dsty,width,height,srcx,srcy)`image_id \u67e5 build\/image.xml\uff1bframe_id \u52a8\u753b\u5e27(\u975e\u52a8\u753b=0)\u7ed8\u5236\u56fe\u7247\uff0c\u652f\u6301\u7f29\u653e+\u88c1\u526a\u3002image_id \u5728\u5de5\u7a0b build \u76ee\u5f55 image.xml \u91cc\u67e5`draw_text(text,x,y,w,h,font_id,size,color,align,charcode)`align 0\u5de6\/1\u4e2d\/2\u53f3\uff1bcharcode 0=UTF-8(\u9ed8\u8ba4)\/1=GBK\u533a\u57df\u6587\u5b57\u7ed8\u5236\uff0c\u652f\u6301\u591a\u5b57\u8282\u5b57\u7b26`draw_surface(surface,x,y,w,h,srcx,srcy)`surface \u4e3a\u753b\u9762\/\u753b\u5e03\u8d44\u6e90\u753b\u9762\u88c1\u526a\u663e\u793a\uff0c\u591a\u56fe\u5c42\u5408\u6210\u7528\n\n## 4. \u7ed8\u56fe\u5b9e\u4f8b\uff1aswitch \u8868\u9a71\u52a8\n\n\u6e90\u6587\u6240\u6709\u7ed8\u56fe\u793a\u4f8b\u90fd\u662f\u4e00\u4e2a\u5957\u8def\uff1aon_update \u8bfb\u6309\u94ae\u952e\u503c \u2192 redraw() \u2192 on_draw \u91cc\u6309\u952e\u503c\u67e5 switch \u8868\u9009\u7ed8\u5236\u51fd\u6570\u3002\u4ee5\u753b\u7ebf+\u753b\u5706\u4e3a\u4f8b\uff1a\n\n```\ndraw_type = 0\nmode = { line = 1, rect = 2, rect_alpha = 3, circle = 4, ellipse = 5, imageId = 6, text = 7 }\n\nfunction on_update(slave,vtype,addr)\n  if addr == 0x1000 then\n    draw_type = get_uint16(VT_LW, addr)  -- \u5b57\u8bbe\u7f6e\u6309\u94ae\u952e\u503c\n    redraw()\n  end\nend\n\nfunction on_draw(screen_id, control_id)\n  local switch = {\n    [mode.line] = function(control)\n      if screen_id == 0 and control == 1 then\n        set_pen_color(0xFFE0)          -- \u9ec4\u8272\n        draw_line(225, 253, 405, 253)\n        set_pen_color(0xF800)          -- \u7ea2\u8272\n        draw_line(508, 128, 508, 378, 5)\n      end\n    end,\n    [mode.circle] = function(control)\n      if screen_id == 0 and control == 1 then\n        draw_circle(300, 253, 100, 0)  -- \u5b9e\u5fc3\u5706\n        draw_circle(450, 253, 150, 1)  -- \u7a7a\u5fc3\u5706\uff0c\u7ebf\u539a1\n      end\n    end,\n  }\n  if switch[draw_type] then switch[draw_type](control_id) end\nend\n```\n\n\u4e09\u4e2a\u6700\u5bb9\u6613\u7ffb\u8f66\u7684\u70b9\uff1a**\u2460get_xxx \u8bfb\u7684\u662f\u7f13\u5b58\u4e0d\u662f\u5b9e\u65f6\u503c**\u2014\u2014\u8981\u8bfb\u6ca1\u7ed1\u63a7\u4ef6\u7684\u5730\u5740\uff0c\u5148 start_read \u540c\u6b65\uff1b**\u2461set_xxx \u5728\u4ece\u673a\u6a21\u5f0f\u4e0b\u4e0d\u53d1\u4e32\u53e3\u5e27**\u2014\u2014MCU \u6536\u4e0d\u5230\u662f\u6b63\u5e38\u7684\uff0c\u522b\u67e5\u534a\u5929\u6ce2\u7279\u7387\uff1b**\u2462on_run \u91cc\u4e25\u7981 set_run_cycle() \u548c delay_ms**\uff0c\u8c03\u5ea6\u5668\u4f1a\u6b7b\u9501\u3002\u753b\u56fe\u5fc5\u987b\u653e on_draw \u91cc\uff0c\u63a7\u4ef6 ID \u975e 0\u3002\n\n\u6574\u7406\u81ea \u5e7f\u5dde\u5927\u5f69\u79d1\u6280 VisualHMI \u5f00\u53d1\u6587\u6863\uff08hmi-doc.gz-dc.com\uff09LUA \u6559\u7a0b\u300cLua \u811a\u672cAPI\u51fd\u6570\u63a5\u53e3\u300d\uff0c\u7248\u6743\u5f52\u5927\u5f69\u79d1\u6280\u6240\u6709\u3002\n\n---\n*modbus.cn*\n"