Emerson operation manual 20 E2 RX/BX/CX I&O Manual Rev 4 5-JAN-2013

5. If the E2 is the beginning of all RS-485 I/Oor MODBUS Networks, set all three jumpersto the UP position. For MODBUS, set thejumpers in the top-most position (MOD). ForI/O Net, set the jumpers in the middle position(I/O). For no termination, set the jumpers tothe DOWN position (NO).

SHIELDED TWISTED PAIR

BELDEN #8761. FOR PLENUM,

USE BELDEN #82761 OR #88761

OR EQUIV.

WIRE + to + (same color)

WIRE 0V to 0V

WIRE - to - (same color)

MOD [	MOD[	MOD[
I/O [	I/O [	I/O [
NO [	NO [	NO [
NOT TERMINATED	TERMINATED	TERMINATED
	FOR I/O NET	FOR MODBUS NET

Acceptable Retail Solutions Transformers:

• P/N 640-0041, 120VAC Primary,

50VA

•P/N 640-0050, 120VAC Primary, 75VA

• P/N 640-0042, 220VAC Primary,

50VA

• P/N 640-0080, Multi-tap 120/208/240VAC Primary, 80VA

•P/N 640-0056, Multi-tap 120/208/240VAC Primary, 56VA

Note: Please refer to transformer for primary side wiring.

120/208/240 VAC

YELLOW

24 VAC 0V

YELLOW

24 VAC

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