Ren-T Assembly Instructions

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Case 1

Connecting PC to first controller without converting to RS485

1. Using a Center-Tap Transformer with the Center-Tap connected
  • D1, D2, D3, R1, R2, P1, JR1, J1 (shunt), J2 (shunt)
2. Using a Transformer without a Center-Tap (or a disconnected Center-Tap)
  • D1, D2, D3, D5, D6, R1, R2, P1, JR1, J1 (shunt), J2 (shunt)

Case 2

Connecting one Controller to the next (RS485 pass-through)

1. Using a Center-Tap Transformer with the Center-Tap connected
  • D1, D2, D3, R1, R2, JR1, JR2 (omit shunts)
2. Using a Transformer without a Center-Tap (or a disconnected Center-Tap)
  • D1, D2, D3, D5, D6, R1, R2, JR1, JR2 (omit shunts)

Case 3

Connecting PC to first controller, converting to RS485 in the process

1. Using a Center-Tap Transformer with the Center-Tap connected
  • D1, D2, D3, D4, D7, R1, R2, P1, JR1, U1, U2, U3, C1, C2 (omit shunts)
2. Using a Transformer without a Center-Tap (or a disconnected Center-Tap)
  • D1, D2, D3, D4, D5, D6, D7, R1, R2, P1, JR1, U1, U2, U3, C1, C2 (omit shunts)
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