Performance Specifications (Common To The System) - Panasonic MEWNET-F Technical Manual

3.2 Performance Specifications (Common to the System)

Item
Communication method
Synchronous method
Transmission distance Note1)
Baud rate
Transmission line
Interface
Transmission error check
No. of master units
per 1 CPU
No. of slave stations per
1 master unit
Per 1 master unit
I/O Terminal
Board
I/O Terminal
Unit
Per 1 CPU
Per 1 master unit
FP2/FP3
Slave station
system
I/O Terminal
Board
I/O Terminal
Unit
Units that cannot be installed
on the backplane of slave
station system
Note1) The transmission distance varies according to the used cable and type of unit.
Note2) The advanced units that occur interrupt are as follows. - Interrupt unit
- High-speed counter unit and Pulse output unit can be used when setting to the mode that does not
occur interrupt.
- As there is no indication for the error that a prohibited unit is installed on FP2 A/D unit, D/A unit and
RTD unit, no error indication will be displayed, even If they are installed incorrectly.
Note3) When using a positioning unit for FP2 slave station system, and If the time taken from the start-
up to the completion of positioning operation is shorter than the scan time, flags such as the output end
flag and pulse output flag may not be read and an error may occur.The time from the start-up to the
completion of positioning operation must be longer than the scan time.
Specifications
Two-wire, half duplex transmission
Start stop synchronous system
700 m (total length) per 1 port (2 paths)
0.5 M bps
2-wire cable (VCTF0.75 mm
Multi-drop (RS485)
CRC (Cyclic Redundancy Check) method
Max. 4 units
Max. 32 stations
Max. 2048 points (FP2/FP3)
Max. 4096 points (FP2SH/FP10SH)
For FP3 Master unit Ver. 1.4 or older, max. 1024 poins
32 points per unit (16-point input + 16-point output) or
24 points (Input: 16 points + Output: 8 point)
* I/O numbers are allocated from the input side.
Per unit, when using a single unit: 16 points, when using expansion units: 32
points
* Number of occupied points is the same for the 8-point unit and 16-point unit.
When combining the input and output, I/O numbers are allocated from the input
side, which are 16-point input and 16-point output.
Max. 128 slots
Max. 64 slots
Max. 24 slots
1 slot
1 slot
* Number of slot is 1 even if a unit is added.
Master Unit, MEWNET-P/W/H Link Unit
ET-LAN Unit, Computer Communication Unit (CCU),
FP3
C-NET Link Unit, S-LINK Unit
Advanced units that occur interrupt
Multi-wire Link Unit, MEWNET-VE Link Unit
ET-LAN Unit, Computer Communication Unit (CCU),
FP2 Multi Communication Unit
A/D Unit, D/A Unit, RTD Unit
Advanced units that occur interrupt
2
x 2C (JIS) or equivalent) is used
3-3