5
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Ports
Port 1 – External Radio - FFSK or RS232
Port 1 is intended for connection to an external data radio and provides either FFSK or RS232 options (see External
Radio, page 6). See Baud Rate Options, page 6)
• The FFSK option is configurable to 4800 baud.
• The RS232 option can operate up to 115,200 baud.
Pin Function (view looking into the ext. radio port)
1 CD
2 RTS
3 TX Data
4 PTT
5 GND
6 RX Data
7 CTS
8 n/c
Ports 2 & 5 - RS232
Ports 2 & 5 can both be used for connection to third party devices via RS232. Each port can operate up to 115,200
baud. The on-board selectable options are detailed in the following page of this manual.
Pin Function (view looking into the RS232 port)
1 DTR
2 RTS
3 TX Data
4 PTT
5 GND
6 RX Data
7 CTS
8 DSR
Note: Port 5 cannot be used as an RS232 port if the Ethernet connection is being used.
Port 3 - RS485
Port 3 is an RS485 port intended for use as a multi-drop serial connection for I/O expansion modules or third party
devices. It can run either Miri protocol or Modbus.
Pin Function (view looking into the RS485 port)
1 DATA B
2 DATA A
3 GND
Port 4 - USB-B
This port is intended for use as a programming port.
Port 5 - Ethernet Option
The Ethernet port is a factory fitted 10/100T option which can run either Modbus TCP or Miri protocols.
Note: Where the Ethernet port is used, Port 5 cannot be used as an RS232 port.