5604 Input/Output (I/O) Module - Hardware Manual
October 19, 2007
8 Serial Communication
The 5604 I/O module enhances the serial communication ability of a SCADAPack controller by
providing an additional RS-232 serial port identified as COM3. The RS-232 port is an 8-pin female
RJ-45 connector configured as Data Terminal Equipment (DTE) and only supports a half-duplex
serial communication. 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.
RJ-45 connector designated P5 on the 5604 I/O Module.
8.1 COM3 RS-232 Serial Port
Connections to COM3 are made through a RJ-45. The wiring and pin connections for this connector
are described in the section 8.2- 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 controller. Default values are set when a Cold Boot or Service Boot is performed on
the controller.
1200, 2400, 4800, 9600, 19200, 38400, 57600 and
115200.
Default: 9600
Odd, None or Even
Default: None
7 or 8 Bits
Default: 8 Bits
1 or 2 Bits
Default: 1 Bit
ModbusRTU or None
Default: ModbusRTU
Ignore CTS or None
Default: None
None, Modbus RTU, Modbus ASCII and optionally
DF1 Or DNP.
Default: Modbus RTU
Standard or Extended
Default: Standard
8.2 RJ-45 Modular Connector for RS-232
Serial communication port COM3 on the 5604 I/O module uses an 8-pin female RJ-45 connectors
configured as Data Terminal Equipment (DTE). The following diagram shows the pin connections
for the RS-232 (RJ-45) port connector for COM3.
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