Section 3: Installation

Reference, Installation, and Operations Manual

June 2013

3-9000-743 Rev S

 

 

Port C Driver Configuration

Serial Port C has isolated and floating grounds (50 VDC isolation). Its grounds must be connected for reliable serial port operation. A shield may be connected to ground at the remote end and can be used to provide ground for the port.

Port C is provided via the Series 100 Option Board or the Series 100 Plus Option Board and can be used for either general purpose serial communication (similar to Ports A and B) or for optional serial communication with a Daniel Gas Chromatograph in Sim2251 mode.

The Port C driver is individually selectable between RS-232 and RS-485 Half Duplex via the Series 100 Option Board or the Series 100 Plus Option Board (if installed) switch banks S10 and S11 and Field Connection Board switch bank S2.

To configure Port C for RS-232 operation, set the switches as indicated in the table below (see Figure 3-21for switch bank locations).

Table 3-31 Port C RS-232 settings

Board

Switch

Position

 

 

 

Option or

S10-1

RS232

Series 100 Plus Option Board

 

 

S10-2

RS232

 

 

 

 

 

S11-1

RS232

 

 

 

 

S11-2

RS232

 

 

 

To configure Port C for RS-485 Half Duplex operation, set the switches as indicated in the table below (see Figure 3-21for switch bank locations):

Table 3-32 Port C RS-485 half duplex

Board

Switch

Position

 

 

 

 

 

Expansion Board or

S10-1

RS485

 

Series 100 Plus Option Board

 

 

 

S10-2

RS485

 

 

 

 

 

 

 

 

S11-1

RS485

 

 

 

 

 

 

S11-2

RS485

 

 

 

 

 

Field Connection

 

Termination On

Termination Off

 

 

 

 

 

S2-1

ON (toward the

OFF (toward the

 

 

outside of the board)

inside of the board)

 

 

 

 

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.

78

Communication settings