Chapter 3. CPU Configuration
112
PACSystems* RX7i, RX3i and RSTi-EP CPU Reference Manual
GFK-2222AD
Settings Parameters
RUN/STOP
Switch
Enables or disables the physical operation of the RUN/STOP Switch.
Choices:
Enabled:
Enables you to use the physical switch on the PLC to switch the PLC into STOP
Mode or from STOP Mode into RUN Mode and clear non-fatal faults.
Disabled:
Disables the physical RUN/STOP Switch on the PLC.
Default: Enabled.
Note:
If COM1 and COM2 are configured for any protocol other than RTU Slave or SNP
Slave, the RUN/STOP Switch should not be disabled without first must making sure
that there is a way to stop the CPU, or take control of the CPU through another
device such as an Ethernet interface. If the CPU can be set to STOP Mode, it will
switch the protocol from Serial I/O to the STOP Mode protocol (default is RTU Slave).
For details on STOP Mode settings, refer to
This applies to COM1 on the CPE302/CPE305, which has only one serial port.
This note does not apply to CPUs which have no serial ports.
Memory
Protection
Switch
Enables or disables the Memory Protect feature associated with the RUN/STOP Switch.
Choices:
Enabled:
Memory Protect is enabled, which prevents writing to program memory and
configuration and forcing or overriding discrete data.
Disabled:
Memory Protect is disabled.
Default: Disabled.
Power-up
Mode
Selects the CPU mode to be in effect immediately after power-up.
Choices: Last, Stop, Run.
Default: Last (the mode it was in when it last powered down).
Note:
If the battery or Energy Pack is missing or has failed and if Logic/Configuration
Power-up Source is set to
Always RAM
, the CPU powers up in STOP Mode
regardless of the setting of the Power-up Mode parameter.
Modbus
Address Space
Mapping Type
Specifies the type of memory mapping to be used for data transfer between Modbus TCP/IP
clients and the PACSystems controller.
Choices:
Disabled:
The
Disabled
setting is intended for use in systems containing Ethernet firmware
that does not support Modbus TCP.
Standard Modbus Addressing:
Causes the Ethernet firmware to use the standard map,
which is displayed on the Modbus TCP Address Map tab.
Default: Disabled
For details on the PACSystems implementation of Modbus/TCP server, refer to
PACSystems
RX7i & RX3i TCP/IP Ethernet Communications User Manual,
GFK-2224.
Universal Serial
Bus
RX3i CPE302/CPE305/CPE310/CPE330/CPE400 CPUs only.
Enables or disables the USB
port for use with RDSD (Removable Data Storage Devices). The USB port is enabled by
default in the CPE302/CPE305/CPE310/CPE330 and in the hardware configuration.
If a CPU310 configuration is stored to a CPE310, the USB port will be enabled.
