root@wirenboard-ARAXKJYF:~# cat /var/log/messages | grep serial | tail -n 100 Jul 20 16:53:32 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 16:53:32 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 16:53:32 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 16:53:32 wirenboard-ARAXKJYF user.notice serial: Init: FLAG: setup register : 9999> <-- 1 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 holding(s) @ 250 of device modbus_io:185:1: Serial protocol error: request timed out Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 17:28:28 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 16 holding(s) @ 250 of device modbus_io:185:2: Serial protocol error: request timed out Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 17:49:46 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 14 holding(s) @ 250 of device modbus_io:191:1: Serial protocol error: request timed out Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 18:34:04 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 14 holding(s) @ 250 of device modbus_io:191:1: Serial protocol error: request timed out Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 18:42:32 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 holding(s) @ 250 of device modbus_io:185:1: Serial protocol error: request timed out Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:07:51 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 14 holding(s) @ 250 of device modbus_io:191:1: Serial protocol error: request timed out Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:20:48 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 holding(s) @ 250 of device modbus_io:185:1: Serial protocol error: request timed out Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:24:19 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 16 holding(s) @ 250 of device modbus_io:185:2: Serial protocol error: request timed out Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:28:35 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 19:35:35 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 coil(s) @ 0 of device modbus_io:191:2: Serial protocol error: request timed out Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 0 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:35:36 wirenboard-ARAXKJYF user.notice serial: Init: FLAG: setup register : 9999> <-- 1 Jul 20 19:46:25 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 coil(s) @ 0 of device modbus_io:191:3: Serial protocol error: request timed out Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 0 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 19:46:29 wirenboard-ARAXKJYF user.notice serial: Init: FLAG: setup register : 9999> <-- 1 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 8 holding(s) @ 250 of device modbus_io:185:1: Serial protocol error: request timed out Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 20:40:23 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: ModbusRTU::ReadRegisterRange(): failed to read 14 holding(s) @ 250 of device modbus_io:191:1: Serial protocol error: request timed out Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: IODIR: setup register : 10000> <-- 65535 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: IPOL: setup register : 10001> <-- 0 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: GPINTEN: setup register : 10002> <-- 65535 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: DEFVAL: setup register : 10003> <-- 0 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: INTCON: setup register : 10004> <-- 0 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: IOCON: setup register : 10005> <-- 17476 Jul 20 21:08:52 wirenboard-ARAXKJYF user.notice serial: Init: CONFIG-FLAG: setup register : 9999> <-- 1