Reference, Installation, and Operations Manual

Section 5: Startup and meter configuration

3-9000-743 Rev S

June 2013

 

 

 

b.To configure Port A for RS-485 Half Duplex operation, set the CPU board and Field Connection board switches as indicated in the table below (see Figure 3-24for switch bank locations):

Table 5-7 Serial Port A RS-485 half duplex configuration switch settings

Board

Switch

Position

 

 

 

 

 

CPU

S3-1

RS485

 

 

 

 

 

 

S3-2

RS485

 

 

 

 

 

 

S3-3

RS485

 

 

 

 

 

 

S3-4

RS485

 

 

 

 

 

 

S5-1

HALF

 

 

 

 

 

 

S6-1

RS485

 

 

 

 

 

 

S6-2

RS485

 

 

 

 

 

Field Connection

 

Termination ON

Termination OFF

 

 

 

 

 

S1-1

TERM ON

TERM OFF

 

 

 

 

 

S1-2

TERM OFF

TERM OFF

 

 

 

 

 

S1-3

HALF DUPLX

 

 

 

 

 

 

S1-4

HALF DUPLX

 

 

 

 

 

Termination should only be enabled if the meter is the last drop in a multi-drop configuration or the only meter in a single-drop configuration.

RS-485 serial connection setup

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