SchneiderElectric_iEM3255.py 文件源码

def _modbusRead(self, key):
        if self.PM_cacheEnabled is False:
            # W/O cache
            val = self.mb.readRegistersAndDecode(self.modbusmap[key][0],self.modbusmap[key][1],self.modbusmap[key][2])
        else:
            # with cache
            val = self.mb.cachedRead(self.modbusmap[key][0], self.modbusmap[key][1], self.modbusmap[key][2])
        log.debug('"%s" Modbus: (%s,%s,%s) = %s' % (key, self.modbusmap[key][0],
                                                    self.modbusmap[key][1], self.modbusmap[key][2], val))
        if self.modbusmap[key][2].startswith("float"):
            try:
                if math.isnan(val):
                    log.debug("NaN regs %s => 0" % self.modbusmap[key][0])
                    val = 0
            except TypeError:
                val = 0
        return val