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Precautions
3. Do not remove the label from the left side of the CPU Unit if a Battery Unit is not 
mounted. 
Other
1. The execution of the ladder program in the ZEN is different from that for other 
PLCs. Refer to Appendix B Ladder Program Execution when writing the ladder 
program. 
2. Abide by all local ordinances and regulations when disposing of the ZEN.
3. The Battery Unit (ZEN-BAT01, sold separately) contains a lithium battery. 
Observe all applicable legal requirements for your area when disposing of the 
lithium battery. 
Z211-E1-03.book  Page xx  Friday, November 21, 2008  10:38 AM