GE PACSystems RX7i, Руководство пользователя

Страница: 66 / 276

Chapter 4. Configuration
GFK-2224Q January 2017 53
%R, %AI, %AQ or %W memory. The default value is the next available %I address. See Chapter 12,
“Diagnostics,” for definitions of the LAN Interface Status (LIS) portion of the Ethernet Status data.
The meaning of the Channel Status portion of the Ethernet Status depends upon the type of operation for each
channel.
For details of the status bits and their operation, refer to “Monitoring the Ethernet Interface Status Bits” in
Chapter 12, “Diagnostics.”
Note: Do not use the 80 bits configured as Ethernet Status data for other purposes or data will
be overwritten.
Note: If the Ethernet interface’s Variable Mode property is set to true, the Status Address
parameter is removed from the Settings tab. Instead, Ethernet Status references must be
defined as I/O variables on the Terminals tab (see Terminals Tab, below).
Length: This is the total length of the Ethernet Interface status data. This is automatically set to either 80 bits
(for %I and %Q Status address locations) or 5 words (for %R, %AI, %AQ and %W Status address locations).
Redundant IP: Selects whether Redundant IP operation is Enabled or Disabled. When this parameter is set to
Enabled, the Redundant IP address must be entered via the Redundant IP Address parameter, below. The
default value is False.
Redundant IP Address: An optional IP Address that will be shared with another device on the network in a
Redundant System. Both devices must use the same subnet mask. This parameter is available only when the
Redundant IP parameter (above) is set to Enabled. This address defaults to 0.0.0.0, which is not a valid IP
address; a valid Redundant IP address must be explicitly configured. See Chapter 1, “Introduction” for more
information about Ethernet redundancy. This IP address is assigned in addition to the device’s primary IP
address.
I/O Scan Set: Specifies the I/O scan set to be assigned to the Ethernet Interface. Scan sets are defined in the
CPU’s Scan Sets tab. The valid range is 1 through 32; the default value is 1.
Note: The Ethernet interface delivers its Ethernet Status (including Channel Status bits) during its
input scan. Each channels data transfer updates the Channels Status bits, so channels
performance may be reduced if the Ethernet interface is configured to use an I/O Scan
Set than runs more slowly than the PLC logic sweep.
If the Ethernet interface is configured to use an inactive I/O Scan Set, the Channels Status bits will not be
transferred and channel operations will not complete.
RS-232 Port (Station Manager) Tab
These parameters are for the RS-232 Station Manager serial port. These defaults should be used for most
applications.
Baud Rate: Data rate (bits per second) for the port. Choices are 1200 , 2400 , 4800 , 9600 , 19.2k, 38.4k, 57.6k,
115.2k. The default value is 9600.
Parity: Type of parity to be used for the port. Choices are None, Even, or Odd; the default value is None.
Flow Control: Type of flow control to be used for the port. Choices are None or Hardware. (The Hardware flow
control is RTS/CTS crossed). The default value is None.
Stop Bits: The number of stop bits for serial communication. Choices are One or Two; the default value is One.
Terminals Tab
This configuration tab is displayed only when the Ethernet interface’s Variable Mode property is set to True.
When Variable Mode is selected, the Ethernet Status bits are referenced as I/O variables that are mapped to
the Ethernet status bits on this configuration tab.
The use of I/O variables allows you to configure the Ethernet interface without having to specify the reference
addresses to use for the status information. Instead, you can directly associate variable names with the status
bits. For more information, refer to “I/O Variables” in the
PACSystems CPU Reference Manual
, GFK-2222.