XT1, XT2 – connectors for PEA connection cables, XT3 – RS-485 connector; XP2
– connector for DC 24V Charger / Power Supply unit (if applicable); XP6, XP7 – connec-
tors for Universal outputs N1 and N2 respectively; J1, J2 – terminals used to set operation
modes; SK1 – switch used to set operation modes for universal outputs.
Fig. A.2. Measurement and Calculation board
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