字节序不会导致协议解析失败，可以把这个节点开启 debug，查看日志。
我知道字节序不会导致失败~我的首选方案是通过信捷的驱动直接获取Double类型的数据，发现上述Error 3009。（我修改一下问题描述） 附上日志内容：2025-03-22 08:17:25:008 [NOTICE] xinje_modbus_rtu.c:100 thjx_0 init success
2025-03-22 08:17:25:009 [NOTICE] xinje_modbus_rtu.c:269 config: host: 192.168.1.182, port: 502, mode: 0
2025-03-22 08:17:25:009 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: length, address: 1!D20044, type: 10, slave id: 1, start address: 20044, n register: 4, area: hold register
2025-03-22 08:17:25:009 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 1300, address: 1!D13100, type: 9, slave id: 1, start address: 13100, n register: 2, area: hold register
2025-03-22 08:17:25:009 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 20364, address: 1!D20364, type: 10, slave id: 1, start address: 20364, n register: 4, area: hold register
2025-03-22 08:17:25:009 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 254, address: 1!D254, type: 10, slave id: 1, start address: 254, n register: 4, area: hold register
2025-03-22 08:17:31:338 [NOTICE] xinje_modbus_rtu.c:127 thjx_0 start success
2025-03-22 08:17:31:362 [NOTICE] xinje_modbus_rtu.c:134 thjx_0 stop success
2025-03-23 02:41:56:231 [NOTICE] xinje_modbus_rtu.c:100 thjx_0 init success
2025-03-23 02:41:56:232 [NOTICE] xinje_modbus_rtu.c:269 config: host: 192.168.1.182, port: 502, mode: 0
2025-03-23 02:41:56:232 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: length, address: 1!D20044, type: 10, slave id: 1, start address: 20044, n register: 4, area: hold register
2025-03-23 02:41:56:232 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 1300, address: 1!D13100, type: 9, slave id: 1, start address: 13100, n register: 2, area: hold register
2025-03-23 02:41:56:232 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 20364, address: 1!D20364, type: 10, slave id: 1, start address: 20364, n register: 4, area: hold register
2025-03-23 02:41:56:232 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 254, address: 1!D254, type: 10, slave id: 1, start address: 254, n register: 4, area: hold register
2025-03-23 02:42:01:768 [NOTICE] xinje_modbus_rtu.c:127 thjx_0 start success
2025-03-23 02:42:01:792 [NOTICE] xinje_modbus_rtu.c:134 thjx_0 stop success
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:100 thjx_0 init success
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:269 config: host: 192.168.1.182, port: 502, mode: 0
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: length, address: 1!D20044, type: 10, slave id: 1, start address: 20044, n register: 4, area: hold register
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 1300, address: 1!D13100, type: 9, slave id: 1, start address: 13100, n register: 2, area: hold register
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 20364, address: 1!D20364, type: 10, slave id: 1, start address: 20364, n register: 4, area: hold register
2025-03-23 06:42:24:572 [NOTICE] xinje_modbus_rtu.c:303 validate tag success, name: 254, address: 1!D254, type: 10, slave id: 1, start address: 254, n register: 4, area: hold register
2025-03-23 06:42:29:693 [NOTICE] xinje_modbus_rtu.c:127 thjx_0 start success
2025-03-23 06:42:29:715 [NOTICE] xinje_modbus_rtu.c:134 thjx_0 stop success
2025-03-24 08:17:30:799 [NOTICE] xinje_modbus_rtu.c:127 thjx_0 start success
2025-03-24 08:17:37:834 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:37:835 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:17:37:835 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:17:40:875 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:40:875 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:17:40:875 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:17:43:915 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:43:915 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:17:43:915 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:17:46:955 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:46:955 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:17:46:955 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:17:53:995 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:53:995 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:17:53:996 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:17:57:035 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:17:57:035 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:17:57:035 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:18:00:075 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:00:075 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:18:00:075 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:18:03:115 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:03:115 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:18:03:115 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:18:10:155 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:10:155 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:18:10:155 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:18:13:195 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:13:195 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:18:13:195 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:18:16:235 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:16:236 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:18:16:236 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:18:19:275 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:19:275 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:18:19:275 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:18:26:315 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:26:315 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:18:26:317 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:18:29:355 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:29:355 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:18:29:355 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:18:32:395 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:32:395 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:18:32:395 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:18:35:435 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:35:435 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:18:35:435 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:18:42:475 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:42:475 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:18:42:475 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:18:45:515 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:45:515 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:18:45:515 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:18:48:555 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:48:555 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:18:48:556 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:18:51:595 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:51:595 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:18:51:596 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:18:58:635 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:18:58:635 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:18:58:635 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:19:01:675 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:01:675 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:19:01:675 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:19:04:715 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:04:715 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:19:04:715 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:19:07:755 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:07:755 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:19:07:755 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:19:14:795 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:14:795 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:19:14:795 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:19:17:835 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:17:835 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:19:17:835 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:19:20:875 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:20:875 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:19:20:875 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:19:23:915 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:23:915 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:19:23:915 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:19:30:955 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:30:955 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:19:30:955 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:19:33:995 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:33:995 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:19:33:995 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:19:37:035 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:37:035 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:19:37:035 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:19:37:055 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-24 08:19:40:085 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:40:085 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:19:40:085 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:19:44:105 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-24 08:19:47:115 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:47:115 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:19:47:115 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:19:47:135 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x33 0x2C 0x00 0x02 0x0A 0x86
2025-03-24 08:19:50:155 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:50:155 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:19:50:155 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:19:50:175 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-24 08:19:53:195 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:53:195 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:19:53:195 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:19:53:215 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-24 08:19:56:235 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:19:56:235 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:19:56:235 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:20:00:255 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-24 08:20:03:275 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:03:275 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:20:03:275 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:20:03:295 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x33 0x2C 0x00 0x02 0x0A 0x86
2025-03-24 08:20:06:315 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:06:315 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:20:06:315 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:20:06:335 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-24 08:20:09:355 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:09:355 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:20:09:355 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:20:09:375 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-24 08:20:12:395 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:12:395 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:20:12:395 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:20:16:415 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-24 08:20:19:435 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:19:435 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:20:19:435 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:20:19:455 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x33 0x2C 0x00 0x02 0x0A 0x86
2025-03-24 08:20:22:475 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:22:475 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:20:22:475 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:20:22:495 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-24 08:20:25:515 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:25:515 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:20:25:515 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:20:25:535 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-24 08:20:28:555 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:28:555 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:20:28:555 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:20:32:575 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-24 08:20:35:595 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:35:595 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:20:35:595 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:20:35:615 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x33 0x2C 0x00 0x02 0x0A 0x86
2025-03-24 08:20:38:635 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:38:635 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:20:38:635 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:20:38:655 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-24 08:20:41:675 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:41:675 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:20:41:675 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:20:41:695 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-24 08:20:44:715 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:44:715 [WARN] modbus_stack.c:421 send read req fail, 1!20364
2025-03-24 08:20:44:715 [ERROR] modbus_req.c:157 send message failed, skip, 1!20364
2025-03-24 08:20:48:736 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-24 08:20:51:755 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:51:755 [WARN] modbus_stack.c:421 send read req fail, 1!254
2025-03-24 08:20:51:755 [ERROR] modbus_req.c:157 send message failed, skip, 1!254
2025-03-24 08:20:51:775 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x33 0x2C 0x00 0x02 0x0A 0x86
2025-03-24 08:20:54:795 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:54:795 [WARN] modbus_stack.c:421 send read req fail, 1!13100
2025-03-24 08:20:54:795 [ERROR] modbus_req.c:157 send message failed, skip, 1!13100
2025-03-24 08:20:54:815 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-24 08:20:57:835 [ERROR] connection.c:886 connect 192.168.1.182:502 error: Operation now in progress(115)
2025-03-24 08:20:57:835 [WARN] modbus_stack.c:421 send read req fail, 1!20044
2025-03-24 08:20:57:835 [ERROR] modbus_req.c:157 send message failed, skip, 1!20044
2025-03-24 08:20:57:856 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
先解决网络问题
修正网络配置。连接状态”连接“，延时9999，已确认”网络连接测试“ 连接正常。数据监控页仍提示Error3009
附上日志：
2025-03-25 02:42:12:795 [NOTICE] xinje_modbus_rtu.c:134 thjx_0 stop success
2025-03-25 02:42:13:645 [NOTICE] xinje_modbus_rtu.c:127 thjx_0 start success
2025-03-25 02:42:17:675 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-25 02:42:17:678 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:20:714 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x00 0xFE 0x00 0x03 0x25 0xF9 0x01
2025-03-25 02:42:20:715 [ERROR] modbus_req.c:157 modbus message error, skip, 1!254
2025-03-25 02:42:20:735 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-25 02:42:20:737 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:23:755 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x4E 0x4C 0x00 0x03 0x92 0xF6 0x01
2025-03-25 02:42:23:755 [ERROR] modbus_req.c:157 modbus message error, skip, 1!20044
2025-03-25 02:42:23:775 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-25 02:42:23:778 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:26:794 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x4F 0x8C 0x00 0x03 0x93 0xB6 0x01
2025-03-25 02:42:26:795 [ERROR] modbus_req.c:157 modbus message error, skip, 1!20364
2025-03-25 02:42:30:815 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x00 0xFE 0x00 0x04 0x25 0xF9
2025-03-25 02:42:30:818 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:33:835 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x00 0xFE 0x00 0x03 0x25 0xF9 0x01
2025-03-25 02:42:33:835 [ERROR] modbus_req.c:157 modbus message error, skip, 1!254
2025-03-25 02:42:33:855 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4E 0x4C 0x00 0x04 0x92 0xF6
2025-03-25 02:42:33:858 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:36:874 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x4E 0x4C 0x00 0x03 0x92 0xF6 0x01
2025-03-25 02:42:36:875 [ERROR] modbus_req.c:157 modbus message error, skip, 1!20044
2025-03-25 02:42:36:895 [DEBUG] log.h:125 >>(8) 0x01 0x03 0x4F 0x8C 0x00 0x04 0x93 0x36
2025-03-25 02:42:36:897 [NOTICE] connection.c:878 connect 192.168.2.182:502 success
2025-03-25 02:42:39:914 [DEBUG] log.h:125 <<(9) 0x01 0x03 0x4F 0x8C 0x00 0x03 0x93 0xB6 0x01
2025-03-25 02:42:39:915 [ERROR] modbus_req.c:157 modbus message error, skip, 1!20364
收到的报文不对
那我能做些什么呢？预期的获取结果就是成功获取 4个16位寄存器存储的64位 8Byte Double类型的数据。
是你自己写的模拟器，还是设备？再具体去修复
这个问题（对信捷特定型号的PLC XDH30A16的数据采集）是无解了吗？
看看设备手册有没有描述。
目前看报文是收到的响应不对
谢谢答复，这个问题查完了，下午调查发现：信捷XDH-30A16L-E提供的Ethernet通讯口只支持TCP/IP，MODBUS TCP，自由格式TCP三种通讯协议，上面问题中的设置选择了 “XINJIE Modbus RTU” 驱动，并且物理链路选择了 “Ethernet”，底层应该是 Modbus RTU over TCP 的通信方式，这样导致发送的请求帧是包含了从站 ID 和 CRC 校验，符合 Modbus RTU 帧的格式，并通过Tcp方式发送，但是设备端特定端口不支持Modbus RTU over TCP 的通信方式，导致响应报文长度和内容不匹配Modbus RTU over TCP的要求，我在文档中看到这款PLC自带485端口，我会尝试用Neuron的XINJIE Modbus RTU 模式与之通讯。最后，我希望NeuronEX中增加XINJIE Modbus TCP 模式，毕竟我看其它国产PLC的驱动都有两个版本，只有信捷是RTU一种。