9300 Series User’s GuideCOM 2 Port

Connections

Specification

Description

 

 

Cable Type

Good quality shielded twisted pair cable, AWG 22 or larger.

 

 

Max. Cable Length

4,000 ft. (1,219 m) 1

 

 

Max. number of devices per bus

32

 

 

1The lengths of all (+ and –) cable segments must be counted including those that connect devices to terminal blocks.

Terminal connections on the meter are marked as follows:

Marking

Terminal Function

 

 

 

SH

RS-485

Shield (electrically connected to chassis ground)

 

 

 

+

RS-485

Data Plus

 

 

 

-

RS-485

Data Minus

 

 

 

COM 2 Port

COM 2 is used for RS-485 communications and can be configured as an EtherGate.

RS-485 Connections

The specifications for RS-485 communications on COM 2 are the same as those for

COM 1.

NOTE

On 9330 and 9350 meters with the Ethernet card, COM2 is hardwired for EtherGate only, and cannot be used for serial communication.

Chapter 7 - Hardware Reference

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Siemens 9330, 9350, 9300 manual COM 2 Port, Connections, Specification Description, Marking Terminal Function

9300, 9350, 9330 specifications

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