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Replacing M580 Hot Standby CPUs
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Original instructions
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Replacing M580 Hot Standby CPUs
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Original instructions
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Step
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Action
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1
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Confirm that the application program running on the M580 Hot Standby PAC has been exported in the ZEF format and is available on the computer.
If not, upload the application program from one of the two PACs to Control Expert.
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2
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Export the application in the ZEF format on the Control Expert workstation.
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3
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If not yet installed, install Unity Pro XL version 11.0 (or later).
NOTE: Unity Pro is the former name of Control Expert for version 13.1 or earlier. |
 WARNING |
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SYSTEM NO LONGER ACTIVE NOR REDUNDANT
Before stopping the system, confirm that no critical operation is in progress. The system is inactive and non-redundant.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
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Step
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Action
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4
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Stop the standby PAC (PAC B) and power it off.
NOTE: At this point, the system is no longer operating redundantly. |
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5
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Disconnect the Hot Standby sync link cable from PAC B.
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6
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Replace hardware or update the PAC B firmware with version 2.10 or later.
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7
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Confirm that there is no program in PAC B: a. Set the rotary switch to Clear. b. Power up the PAC. c. Wait approximately one minute, until LEDs A and B are blinking. d. Power down the PAC. e. Set the rotary switch to B. |
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8
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Power on PAC B.
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9
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If using an SD memory card, insert the card in PAC B. (Refer to the SD memory card instructions for information about existing programs on the card.)
NOTE: Confirm that the PAC is in a NOCONF state. |
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10
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Import the ZEF file of the application.
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11
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In the PLC Bus editor, replace the current version of the PAC with the new firmware PAC version.
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12
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Select the Online modification in RUN or STOP check box in the PAC Configuration tab to enable the configuration change.
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13
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Rebuild the application (Build → Rebuild All Project) and download into PAC B. The PAC is in STOP mode.
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14
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Connect the Hot Standby sync link cable to PAC B.
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15
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Connect Control Expert to PAC A.
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WARNING |
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LOSS OF COMMUNICATION
Before changing the mode of PAC A to STOP, confirm that no critical operation is in progress. Once confirmed, the system is considered inactive or non-redundant.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
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16
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Stop PAC A.
NOTE: The system is no longer active nor redundant. |
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17
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Connect Control Expert to PAC B.
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WARNING |
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UNEXPECTED APPLICATION BEHAVIOR - LOSS OF DATA
At the end of the application download, all application data in the PAC B have their initial value. Before you change the mode of PAC B to RUN, confirm that the application can restart with the initial values.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
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18
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Put PAC B in RUN mode.
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19
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Confirm that PAC B is now the primary.
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Step
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Action
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1
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Power off PAC A, which is in STOP mode.
NOTE: At this point, the system is no longer operating redundantly. |
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2
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If using an SD memory card, remove it.
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3
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Disconnect the Hot Standby sync link cable from PAC A.
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4
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Replace hardware or update the PAC B firmware with version 2.10 or later.
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5
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Power on PAC A.
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6
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If using an SD memory card, insert it in PAC A.
NOTE: Confirm that the PAC is in a No Conf state. |
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7
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Connect the Hot Standby sync link cable to PAC A.
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8
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An automatic transfer from primary to standby occurs.
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9
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Execute a RUN command on PAC A.
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10
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Confirm that PAC A is now the standby.
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