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Step 3: Wiring the Device for RS485 Communication
Fig 1.18 Communication Wiring
Item
Description
Pin name
Ta[TRX+], Tb[TRX-]
Connector
Screw terminal[Pluggable]
Wire
1.25 to 3.5 mm
2
[ 24 to 14 AWG], Shield twisted pair
Maximum Cable Length
1219m[4000ft]
Maximum Devices/bus
32
Note
Using a UL2919 cable is recommended for communication.
Comm Indicator
The Comm LED blinks green when the meter is transmitting data.
Protocol
The meter provides Modbus RTU protocol. Refer to the Accura 3300 Communication User
’
s
Guide for details about the Modbus protocol.
Summary of Contents for Accura 3300
Page 1: ...Energy Solution for Human Nature...
Page 6: ...Page 6 Standards Compliance Process Control Equipment E324900 KCC REM RTE ACCURA3300...
Page 17: ...Page 17 Meter Dimensions Fig 1 3 Front View Fig 1 4 Rear View Fig 1 5 Side View...
Page 23: ...Page 23 Fig 1 12 Three Phase 4 Wire Connection Using 3 PTs and 3 CTs Wiring Mode 3P4U...
