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
Protocol
None, Modbus RTU or Modbus ASCII
Default: Modbus RTU
Addressing Mode
Standard or Extended
Default: Standard
4.1.4
RJ-45 Modular Connector for RS-232
Serial communication ports COM1, COM2 and COM4 are located on the SCADAPack 32P
SCADAPack 32P. These are RS-232 serial ports using a 8-pin female RJ-45 connectors configured
as Data Terminal Equipment (DTE). The recommended specification for RS-232 cable length is a
maximum of 50 feet or 15.2 meters. Shielded cable must be used and the shield should be connected
to chassis ground at one end.
The following diagram shows the pin connections for the RS-232 (RJ-45) port connector for COM1,
COM2 and COM4.
RJ-45 Modular Jack
1. + 5V
2. DCD
3. DTR
4. GND
5. RxD
6. TxD
7. CTS
8. RTS
2
1
8
7
6
5
4
3
Notes:
•
+5V is only available on Pin 1 when a jumper is installed on J4. Refer to section
•
Serial port COM1 may be configured as RS-232 or RS-485. A jumper must be installed on J10
to operate COM1 in RS-232 mode. Refer to section
location of J10.
SCADAPack 32P Controller Hardware Manual
May 26, 2006
17