Omron SYSMAC CJ1W-PRM21, Operation Manual

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Appendix C
Memory Card Backup Functions
C-1 Outline of Functions
The PROFIBUS-DP Master Unit stores the following setup data in the internal non-volatile memory (Flash
ROM).
• Bus Parameters set
• Allocated slave parameter sets.
All these parameter sets can be backed up to and restored from a Memory Card mounted to the CPU Unit. If
the parameter data of a good functioning PROFIBUS-DP Master Unit has been saved on a Memory Card, this
saved data can be used to perform a quick configuration, when replacing the PROFIBUS-DP Master Unit, with-
out the direct use of the Configuration software. The data can be backed up to a Memory Card only. It cannot
be backed up to a EM file.
The backup process does not only involve the backup of the PROFIBUS-DP Master parameter data, but also
the parameter data of any other Special CPU Bus Unit on the same PLC, as well as the PLC program, param-
eter area data, and I/O memory data. This function can be executed in any operating mode.
When performing a backup from the PROFIBUS-DP Master Unit to the Memory Card, the parameter sets are
stored in the file BACKUPnn.PRM, where nn is the Unit number in 2-digit hexadecimal.
Note This function is not supported by CS-series CS1 CPU Units that are pre-EV1.
C-2 Backing Up Unit Setup Files
In order to save the Unit’s parameter sets to the Memory Card mounted to the CPU Unit, perform the following
procedure (see figure below).
1. Make sure that the parameter sets in the Unit are correct and that the Unit starts up normally, and insert a
Memory Card in to the Card slot.
2. Turn ON pin 7 of the DIP switch on the front of the CPU Unit (behind the cover above the Memory Card slot).
3. Press and hold the Memory Card power supply switch for 3 seconds. When the switch is pressed, the MCP-
WR Indicator on the front of the CPU Unit will flash once and then remain lit while the data is being written.
The indicator will go OFF after the data has been written properly. During the transfer to the Memory Card,
the Parameter Transfer in Progress bit in Unit Status Word (CIO Word n+4) will turn ON.
Pin 7: ON
Memory Card
Press and hold the
Memory Card Power
Switch for three seconds.
(This example shows a
CS-series CPU Unit.)
BUSY
MCPWR
Memory Card
LED indicators