Serial Port Profiles

Advanced Field Descriptions

Configure the following parameters:

Idle Timeout Use this timer to close a connection because of inactivity. When the Idle Timeout expires, the IOLAN will end the connection.

Range: 0-4294967 seconds (about 49 days)

Default: 0 (zero), which does not timeout, so the connection is permanently open.

Enable Modbus Click this button to launch the Destination Slave IP Settings window, where

Exceptions you can configure the TCP/Ethernet Modbus Slaves that the Modbus Master on the Serial Port will communicate with.

Character Timeout Used in conjunction with the Modbus RTU protocol, specifies how long to wait, in milliseconds, after a character to determine the end of frame.

Range: 10-10000

Default: 30 ms

Message Timeout Time to wait, in milliseconds, for a response message from a Modbus TCP or serial slave (depending if the Modbus Gateway is a Master Gateway or Slave Gateway, respectively) before sending a Modbus exception.

Range: 10-10000

Default: 1000 ms

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IOLAN SDS/SCS/STS User’s Guide, Version 3.6

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Perle Systems STS, SCS manual Advanced Field Descriptions, Default 30 ms, Default 1000 ms