GE PACSystems RX7i Reference Manual page 140

Port Parameters
Timeout(s) (Available only when STOP Mode is set to SNP Slave.) The maximum time that the slave will wait
to receive a message from the master. If a message is not received within this timeout interval,
the slave will assume that communications have been disrupted, and then it will wait for a new
attach message from the master.
Valid range: 0 through 60 seconds.
Default:
▪
When the STOP Mode is different from the Port Mode: 10 seconds.
▪
When the STOP Mode is the same as the Port Mode: the value is read-only and is set to the
same value as the Timeout for the Port Mode.
SNP ID (Available only when STOP Mode is set to SNP Slave.) The port ID to be used for SNP
communications. In SNP multi-drop communications, this ID is used to identify the intended
receiver of a message. This parameter can be left blank if communication is point to point. To
change the SNP ID, click the values field and enter the new ID. The SNP ID is up to seven
characters long and can contain the alphanumeric characters (A through Z, 0 through 9) or the
underline (_).
Default:
▪
When the STOP Mode is different from the Port Mode: the default is blank.
▪
When the STOP Mode is the same as the Port Mode: the value is read-only and is set to the
same value as the SNP ID for the Port Mode.
Station (Available only when STOP Mode is set to RTU slave.) ID for the RTU Slave.
Address Valid range: 1 through 247.
Default:
▪
When the STOP Mode is different from the Port Mode: 1.
▪
When the STOP Mode is the same as the Port Mode: the value is read-only and is set to the
same value as the Station Address for the Port Mode.
GFK-2222AD April 2018
Chapter 3. CPU Configuration
129