!

SAFETY

FOR LIFE

Communications

Communication Ports

The Form 5 control has three communication ports from the CPU module. Two of the three ports are user-acces- sible. Communication Port 1 is the operator panel LCD display where data is exchanged between the CPU and the operator panel. Though not user-configurable, Port 1 allows for flexible modifications to the front panel for custom applications.

The operator panel RS-232 communication Port 2 provides temporary local personal computer (PC) access when connected with a standard 9-pin cable. Port 2 provides a dual communication interface for the user. The port includes a software switch for two external connec- tions; the operator panel RS-232 DB-9 connector, or the fiber-optic/RS-232 communication accessories. Local connection to the operator panel RS-232 connection takes precedence over the communication accessory. Disconnecting the operator panel RS-232 communication automatically reconnects the communication accessory to Port 2.

Accessory Ports 2 and 3 are resident on the back of the operator panel and can be configured to either 2179 or DNP3.0 protocols. Port 3 provides uninterrupted communication to the RS-232 or Fiber-Optic accessory, and is not affected by any other port or physical connection.

Figure 16 illustrates the communication configuration for serial ports1, 2, and 3.

 

 

 

 

TEMPORARY

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATIONS

 

ENGINEERING

 

 

ENGINEERING

 

SCADA SYSYEM

 

 

(Local PC)

(Radio, Fiber-Optic, Modem)

(Radio, Fiber-Optic, Modem)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OPERATOR PANEL

 

OPERATOR

 

 

 

RS-232 or

 

 

 

RS-232 or

 

 

DISPLAY AND

 

PANEL

 

 

 

FIBER-OPTIC

 

 

 

FIBER-OPTIC

 

 

KEYPAD

 

RS-232

 

 

 

ACCY

 

 

 

ACCY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUTO TRANSFER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Operator Panel

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Connection Disables

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Accessory)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMUNICATIONS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PORT 2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Shared)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COMMUNICATIONS

 

 

 

 

 

COMMUNICATIONS

 

 

 

 

 

 

CPU

 

 

 

 

PORT 1

 

 

 

 

 

PORT 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Internal Use Only)

(Metering, Histograms

 

(Dedicated)

 

 

 

 

 

 

Profiles, Alarms, Targets)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 16.

Control communication port configuration.

Fiber-Optic/RS-232 Accessory

Two sets of receive and transmit LEDs (Figure 17) are provided on the operator panel for fiber-optic and RS-232 communications. The TX2 and RX2 LEDs illuminate when communicating with the operator panel RS-232 port. The TX3 and RX3 LEDs illuminate when communicating with either the fiber-optic or RS-232 interface accessory boards on communication Port 3.

S280-79-10

The RS-232 accessory board and the fiber-optic accessory boards are located behind the operator panel. Each accessory board can be connected to either Port 2 or Port 3; no two boards can use the same port. The operator panel LEDs indicate the status of communication on the accessory boards. Temporary connections to the operator panel RS-232 port disables fiber-optic or RS-232 communication at Port 2.

Port 3 provides uninterrupted communication to a remote terminal unit (RTU). Refer to S280-79-4 Form 5 Serial communications Accessory Operation Instructions for additional information.

TX 3 TX 2

RX 3

RX 2

RS232

 

Figure 17.

Fiber-Optic/RS-232 receive and transmit LEDs and data port on the operator panel. The TX2 and RX2 LEDs illuminate during communication with the operator panel RS-232 port.

Protocols

Three protocols are available for the Form 5 control and are factory-configurable to communication Ports 2 and 3.

The protocols are:

•Cooper Power Systems 2179

•DNP3.0, Level 3

•S-Comm Protocol accessory

Protocol DNP3.0 includes “Unsolicited Report by Exception ” functionality and Protocol 2179 includes 2-bit status functionality.

Complete documentation for Cooper Power Systems protocols are:

•Reference Data R280-90-12, Serial Communication Protocol 2179

•Reference Data R280-90-13, Communication Point Database for Protocol 2179

•Reference Date R280-90-14, Communication Point Database for Protocol DNP3.0

Control Information

Control information, including firmware version and database version, is factory installed and can not be altered by the user. This information is accessible from the LCD display, Screen 39.

Communication Ports 2 and 3 settings can be referenced from the LCD display, Screens 40 and 41 respectively. (Port 1 shares the same settings as Port 2.)

19