Prerequisites
 
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Update Operation and Associated Connections
Main operations performed to update a Hot Standby system:
Main Steps
Operation
Communication protocol
Prepare the system.
Prepare the Hot Standby system.
Modbus
Modbus Plus
Update the Standby coprocessor.
Prepare the Standby CPU.
–
Connect the Ethernet port of the PC to a switch with an RJ45 cable.
Connect the switch to the HSBY Link port or the Standby CPU with a fiber optic cable.
FTP (Ethernet) on fiber optic.
Update the Standby coprocessor firmware.
Reset the Standby CPU by performing a power cycle.
Update the Standby CPU.
Connect the PC to the Modbus or Modbus Plus port of the Standby CPU.
Modbus
Modbus Plus
Update the Standby CPU OS.
Optional: Update the 140 CRP 312 00 head communication module on the Standby rack (PC connected to the 140 CRP 312 00).
FTP (Ethernet)
Switchover
Setup the Standby CPU and perform a switchover.
–
Update the new Standby coprocessor.
Prepare the new Standby CPU.
–
Connect the Ethernet port of the PC to a switch with an RJ45 cable.
Connect the switch to the HSBY Link port or the new Standby CPU with a fiber optic cable.
FTP (Ethernet) on fiber optic.
Update the new Standby coprocessor firmware.
Reset the new Standby CPU by performing a power cycle.
Update the new Standby CPU.
Connect the PC to the Modbus or Modbus Plus port of the new Standby CPU.
Modbus
Modbus Plus
Update the new Standby CPU OS.
Optional: Update the 140 CRP 312 00 head communication module on the new Standby rack (PC connected to the 140 CRP 312 00).
FTP (Ethernet)
Switchover
Setup the new Standby CPU and perform a switchover.
–
Setup the system.
Setup the system.
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NOTE: During the update, the system is not redundant.
Updating Firmware Without Stopping the Primary CPU
Under normal operating conditions, both controllers in a redundant system must have the same versions of firmware. The controllers check the firmware versions to detect a firmware mismatch. Normally, when a mismatch exists, performing a switchover is not possible because the Standby CPU controller is not allowed to go to the RUN Primary mode.
To allow a firmware update without stopping the application, set the Command Register system bit %SW60.4 to 1. More details are provided in the Hot Standby Command Register Description topic.
NOTE: Enabling the firmware update without stopping the application overrides the process of checking whether the Primary CPU and Standby CPU are configured identically. As soon as the firmware and OS update is finished in both CPUs set %SW60.4 to 0.
NOTE: An update is only possible if the firmware used is compatible with the target hardware.
Compatibility Issues
To update a Quantum Hot Standby operating system without shutting down the process, the current application program has to be executable by the new operating system.
Observe this requirement when updating with minor revisions targeted for bug fixes or minor enhancements.
When a major function enhancement needs to be made, maintaining this compatibility may not be possible. In this case, an operating system update requires a system shutdown.
Equipment Needed for the Hot Standby Coprocessor Firmware Update
To update a Quantum Hot Standby coprocessor module, you need the following equipment:
Equipment
140 CPU 671 60
140 CPU 672 60
140 CPU 672 61
140 CPU 678 61
PC equipped with an Ethernet network card
x
x
Electric/optic switch and its power supply
Modicon TCSESM083F2CU0
Modicon TCSESM043F1CS0
RJ45 - RJ45 straight forward cable
x
x
Fiber optic cable
SC – MTRJ duplex optic cable 490NOC00005
LC - SC duplex optic cable VDIF0626463505
Connecting the PC to the HSBY Link port of the CPU: 
1
PC equipped with an Ethernet network card. 
2
Electric/optic switch and its power supply. 
3
Quantum Hot Standby CPU. 
4
RJ45 - RJ45 straight forward cable. 
5
Fiber optic cable
HSBY Link port of the CPU:
Equipment Needed for the CPU OS Update
The CPU OS update is performed via Modbus or Modbus Plus.
IP Address of the PC
Change the IP address of your PC to get it into the same subnetwork as the CPU.
The first three groups of digits have to be the same. For example, the CPU address is 85.16.133.13 and the PC address needs to be 85.16.133.xx.