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Encore Engage Gateway 31Part 1615959−01 2019 Nordson CorporationFlow % Adjust MessageUsing IO Module 5This IO module relates to the PLC commands that adjust all the flow nodesto operate at some percentage of their setpoint. Separate Flow andAtomizing percentages may be entered.The percentage value may be from −100% to +100%. 0% − Control flow rate at current set point −100% − Sets flow rate to zero +100% − Doubles the flow rate (limited by saturation) negative percent values are expressed in two’s complement form.Use Address Offset 27 for WAIT function, if needed for the Multi ScanMethod.Address Offset 28 contains the % value for the Flow setpoint.Address Offset #29 contains the % value for the Atomize setpoint.NOTE: A zero in Address Offset 27 does not indicate that this % Adjustfeature is OFF. To turn the feature OFF, or to be sure that the % Adjust is0% for both Flow and Atomize, it is important to write zeros in AddressOffsets 28 and 29. Once it is certain that % Adjust is OFF (i.e. allpercentages equal to 0), it is permissible to write a zero into Address Offset27. If this feature is never used it requires no maintenance. However, if it is(or was) ever used then it is recommended to set IO Module 5 duringsystem initialization to a known value. This step is important since the flowcontrol nodes store their last %Adjust values in EEPROM. When flowcontrol node power is cycled, they will start up with the last %Adjust valuesent to them.The Gateway sends a broadcast message to each channel of each flowcontrol node every time the PLC sends a Flow % Adjust message.