Control Microsystems SCADAPack LP - Serial Communication; RS-232 Serial Communications Ports; COM2 RS-232 Serial Port

10 Serial Communication
The SCADAPack LP controller is equipped with three serial communication ports. Two of the serial
communication ports support RS-232 serial communication and one port supports RS-485 serial
communication.
Serial ports on the SCADAPack LP controller are designated COM1, COM2 and COM3. Refer to
Figure 2: SCADAPack LP Board Layout for the location of the serial ports.
10.1 RS-232 Serial Communications Ports
The two RS-232 serial ports are designated COM2 and COM3.
All RS-232 wiring must use shielded cable. The shield should be connected to chassis ground at one
point. Failure to properly shield the cable may result in the installation not complying with FCC or
DOC radio interference regulations.
10.1.1 COM2 RS-232 Serial Port
The following table shows the serial and protocol communication parameters supported by COM2.
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
300, 600, 1200, 2400, 4800, 9600, 19200 and 38400
Default: 9600
Duplex
Full or Half
Default: Full
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
SCADAPack LP Hardware Manual
May 26, 2006
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