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Command Reference Change RS485
2-42
2.51 Change RS485
Enables RS-485 networking and configures the necessary RS-485 parameters on the MSS-VIA and the
MSS4. RS-485 networking is explained in the Configuration chapter of your MSS installation guide.
Restrictions Requires privileged user status.
Errors Only applies to the MSS-VIA and the MSS4 (the MSS485 is configured via
jumpers).
Parameters
Port
MSS4 only. Specifies a particular port or group of ports.
Note: In the absence of the PortList parameter, the configuration will affect the MSS4’s
current port only.
PortList
Specify a particular port or group of ports. Port numbers are specified with
integers between 1 and 4, and should be separated with commas (for lists) or
dashes (for ranges).
Enabled/Disabled
Enables or Disables RS-485 mode. By default, the MSS is configured for RS-
232 networking.
Mode
When RS-485 Mode is enabled, you must choose either two-wire or four-wire
mode. If you do not explicitly set a mode with this command, the MSS will
default to four-wire mode.
2Wire
Sets the MSS to use two-wire mode.
4Wire
Sets the MSS to use four-wire mode.
Termination
Enable termination whenever you are using long cable runs and Disable it at
other times. Only end nodes should be terminated.
CHANGE RS485
PORT Portlist
DISABLED
ENABLED
MODE
2WIRE
4WIRE
TERMINATION
ENABLED
DISABLED
TXDRIVE
ALWAYS
AUTO