Panasonic FP7 User Manual page 6

Power supply sequence
Before turning on the power
Request concerning program storage
6
 If using a power supply device without an internal protective circuit,
always make sure power is supplied to the unit through a protective
element such as a fuse.
 Be sure to supply power to a CPU and an expansion unit from the same
power supply, and turn the power on and off simultaneously for both.
Make sure the power supply of the CPU turns off before the power supply
for input and output. If the power supply for input and output is turned off
first, the CPU will detect the input fluctuations and may begin an unex-
pected operation.
When turning on the power for the first time, be sure to take the precau-
tions given below.
 During installation, check that there are no scraps of wiring, particularly
conductive fragments, adhering to the unit.
 Verify that the power supply wiring, I/O wiring, and power supply volt-
age are all correct.
 Sufficiently tighten the installation and terminal screws.
 Set the operation mode selector to PROG mode.
To prevent the accidental loss of programs, the user should consider the
following measures:
 Backing up programs: To avoid accidentally losing programs, destroying
files, or overwriting the contents of a file, use the backup or export
functions of Control FPWIN Pro and store the files in a safe place. Addi-
tionally, you can print out the entire project documentation.
 Specifying passwords: The password setting is designed to avoid pro-
grams being accidentally overwritten. If the password is forgotten,
however, it will be impossible to overwrite the program even if you
want to. Also, if a password is forcibly bypassed, the program is delet-
ed. Therefore, please note the password in a safe location.
FP7 Analog Output Unit User's Manual