Control Microsystems SCADAPack LP - COM3 RS-232 Serial Port

Pin Function Description
This pin is set to a SPACE when no data is being transmitted.
The LED is ON for a MARK level.
10.1.2 COM3 RS-232 Serial Port
The following table shows the serial and protocol communication parameters supported by COM3.
These parameters are set from TelePACE, ISaGRAF Workbench or from an application program
running in the SCADAPack LP controller. Default values are set when a Cold Boot or Service Boot
is performed on the SCADAPack LP controller.
Parameter Supported Values
Baud Rate
1200, 2400, 4800, 9600, 19200, 38400, 57600 and
115200
Default: 9600
Duplex
Half
Default: Half
Parity
Odd, None or Even
Default: None
Data Bits
7 or 8 Bits
Default: 8 Bits
Stop Bits
1 or 2 Bits
Default: 1 Bit
Receive Flow Control
ModbusRTU or None
Default: ModbusRTU
Transmit Flow Control
Ignore CTS or None
Default: None
Station
1 to 65534
Default: 1
Protocol
None, Modbus RTU or Modbus ASCII
Default: Modbus RTU
Addressing Mode
Standard or Extended
Default: Standard
Connections to COM3 are made through a RJ-45 modular connector. COM3 supports RxD and TxD
plus Ground and 5V power. The following diagram shows the pin connections for the RS-232 (RJ-
45) port connector for COM3.
The SCADAPack LP COM3 is designed to operate with the SCADAPack Vision operator interface
and has several special features noted below.
SCADAPack LP Hardware Manual
May 26, 2006
26