VersaTRAK RTU User M anual
Page 20 of 31
Last Revised: 05/23/02
SIXNET
••••
Box 767
••••
Clifton Park, NY 12065 USA
••••
+1 (518) 877-5173
••••
FAX +1 (518) 877-8346
••••
Passthru Mode
Ov erv iew
Passthru mode is a communication choice for VersaTRAK and Mini-VersaTRAK RTUs.
This selectable mode lets an RTU function as a RS232, RS422/485 or Ethernet converter or
radio modem master, thus eliminating the need for a special communication board in your
computer. For example, you can use passthru mode to communicate to Ethernet or RS422 /
RS485 gateways from a single serial port on your computer.
In the SIXNET I/O Tool Kit configuration, when you enable a passthru connection, the
RTU will bidirectionally pass messages between the two specified ports (RS232,
RS422/RS485 or Ethernet). Up to two passthru connections may exist on a VersaTRAK
RTU.
Connections to passthru stations are documented in the upcoming pages. Please note that
passthru mode requires version 2.08 or newer gateway/RTU firmware to function properly.
Typical RS485 Passthru Connections
