想通过DeviceStates功能块诊断IO device是否掉线或故障,
DeviceStates 的Mode有如下设置:
Parameter MODE
1: IO devices/DP slaves are configured
2: IO devices/DP slaves are faulty
3: IO devices/DP slaves are disabled
4: IO devices/DP slaves exist
5: IO devices/DP slaves for which a problem has occurred. For example:
Maintenance demanded or recommended
Not accessible //这个是不是PN网线脱落或接口模块没有供电时的状态?
Not available
Error occurred
诊断IO device是否掉线该用哪种模式? 故障(例如模块故障)应该用哪个模式?
谢谢!