4 Serial
Communication
The SCADAPack 32P controller is equipped with three serial communication ports. All three serial
communication ports support RS-232 serial communication and one port supports both RS-232 and
RS-485 serial communication.
Serial ports on the SCADAPack 32P controller are designated COM1, COM2 and COM4. Refer to
Figure 2: 5232 Controller Module
section for the location of the serial ports.
4.1
RS-232 Serial Communications Ports
All RS-232 wiring must use shielded cable. The shield should be connected to chassis ground at one
point. The DE-9 connector shell is a good ground point. Failure to properly shield the cable may
result in the installation not complying with FCC or DOC radio interference regulations.
4.1.1
COM1 RS-232 Serial Port
Serial port COM1 may be configured as an RS-232 or RS-485 serial communication port.
•
A jumper must be installed on J10 to operate COM1 in RS-232 mode.
•
A jumper must be installed on J9 to operate COM1 in RS-485 mode.
Figure 2: 5232 Controller Module
for the location of COM1 and jumpers J9 and J10.
For information on using COM1 as a RS-485 serial port refer to section
Connections to COM1 are made through a RJ-45 modular connector. The wiring and pin
connections for this connector are described in section
4.1.4-RJ-45 Modular Connector for RS-232
The following table shows the serial and protocol communication parameters supported by COM1.
These parameters are set from TelePACE, ISaGRAF Workbench or from an application program
running in the SCADAPack 32P controller. Default values are set when a Cold Boot or Service Boot
is performed on the SCADAPack 32P controller.
Parameter
Supported Values
Baud Rate
300, 600, 1200, 2400, 4800, 9600, 19200, 38400,
57600 and 115200.
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
SCADAPack 32P Controller Hardware Manual
May 26, 2006
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