plc读写参数调整，读写方式调整

zhangqian

2023-12-19 be40c6bbad18cee0444c50069d98967cd26b6c3b

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package constvar
 
import (
    "github.com/songzhibin97/gkit/cache/local_cache"
    "golang.org/x/sync/singleflight"
)
 
var (
    BlackCache  local_cache.Cache
    SingleGroup = &singleflight.Group{}
)