Panasonic FP3 Technical Manual page 14

1-4. Combinations
J Limitations on unit installation
More than one FP3 transmitter master unit can be mounted; however, the following cautions should be observed.
- I/O occupation:
The total number of controllable I/O points should not be set higher than the number of I/O points of the FP3/FP10S
CPU.
< For FP3 CPU >
The maximum number of controllable I/O points is 2,048 for input and 2,048 for output.
For example, an FP3 transmitter master unit for which 128 input points and 128 output points are selected can be
mounted with up to 16 units.
< For FP10S CPU >
The maximum number of controllable I/O points is 3,072 for input and 3,072 for output.
For example, an FP3 transmitter master unit for which 128 input points and 128 output points are selected can be
mounted with up to 24 units.
- Current consumption:
The total current consumption of the units used should not exceed the rated output current of their power supply unit.
There is no restriction concerning the combination or mounting slot of the FP3/FP10S I/O units and intelligent units.
However, please note that I/O allocation is determined by the mounting positions and combinations of the units (I/O
occupation).
The I/O occupation points of an FP3 transmitter master unit are the same as the I/O points selected by operation mode
selector Nos. 5 to 8.
For example, when 128 input points and 128 output points are selected by the operation mode selector, the I/O
occupation is 128X and 128Y.
Notes:
See the "FP3/FP10S HARDWARE Technical Manual" for details about limitations on unit installation.
The maximum number of controllable I/O points for FP3/FP10S CPUs is set at the factory to 1,024.
If the number of I/O points used by the MEWNET- TR system exceeds 1,024, change the base word number
using the NPST - GR software to increase the number of controllable I/O points.
See the "NPST - GR SOFTWARE Manual" and "REMOTE I/O SYSTEM Technical Manual" for details about
the I/O number allocation by base word number setting.
Example: To use 1,280 I/O points with a MEWNET- TR system, change the base word number from No. 64
(factory setting) to No. 80 using the NPST - GR software.
Base
word No.
0
64
127
8
Base
Memory area
word No.
1,024 points
(0 to 63F)
Memory area
0
1,280 points
(0 to 79F)
80
127
I/O points for I/O units and
MEWNET - TR system
I/O points for MEWNET - F
system