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6.1.2 报警指示及报警复位…………………………………………………………………………………………………………………76 6.2 故障报警及对策 ............................................................................................................................................................................ 76 6.3 其他异常情冴的处理方法 ........................................................................................................................................................... .78 6.3.1 上电无显示………………………………………………………………………………………………………………………………78 6.3.2 变频器运行后电机丌运转…………………………………………………………………………………………………………..787 保养和维护………………………………………………………………………797.1 定期检查 ......................................................................................................................................................................................... 79 7.2 零部件更换年限 ............................................................................................................................................................................ 798 MODBUS 通讯协议……………………………………………………………808.1 信息格式 ......................................................................................................................................................................................... 80 8.2 控制指令说明................................................................................................................................................................................. 81 8.3 变频器为主站................................................................................................................................................................................. 81 8.4 MODBUS 通讯错误代码 .............................................................................................................................................................. 82 8.5 MODBUS 信息示例 ...................................................................................................................................................................... 83附录一 附录二 附录三 附录四变频器之间使用 RS485 实现主从控制 …………………………84 制劢配件……………………………………………………………..85 变频器扩展卡说明………………………………………………….87 外围电气元件选型指导…………………………………………….882