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Using ION7550RTU as a remote display for PM820
Metering & Power Quality
Schneider Electric support forum about Power Meters (ION, PowerTag, PowerLogic) and Power Quality from design, implementation to troubleshooting and more.
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In Desginer, hold down "Shift" and click Modbus Master Device module's output, do you see any values in the output regsiters? If not, check the "Modbus Master Option" module to assign the correct com port to "Serial Connection 1".