Panasonic FP0H User Manual page 42

PLC link
 Calculation example
Condition
16-unit link with all units added
Max. unit number = 16
1
Relays / registers are evenly
allocated, and
Each PLC scan time = 1 ms
16-unit link with all units added
Max. unit number = 16
2 Relays / registers are evenly
allocated
Each PLC scan time = 5 ms
16-unit link with one unit
unadded,
Max. unit number = 16
3
Relays / registers are evenly
allocated
Each PLC scan time = 5 ms
8-unit link with all units added
Max. unit number = 8
4
Relays / registers are evenly
allocated
Each PLC scan time = 5 ms
2-unit link with all units added
Max. unit number. = 2
5
Relays / registers are evenly
allocated
Each PLC scan time = 5 ms
2-unit link with all units added
Max. unit number = 2
6
Relay 32 points / register 2W are
evenly allocated
Each PLC scan time = 1 ms
4-10
Calculation process
Ttx=0.096
Each Pcm=23+(4+8)×4=71 bytes
Tpc=Ttx×Pcm=0.096×71≈6.82 ms
Each Ts=1+6.82=7.82 ms
Tlt=0.096×(13+2×16)=4.32 ms
Ttx=0.096
Each Pcm=23+(4+8)×4=71 bytes
Tpc=Ttx×Pcm=0.096×71≈6.82 ms
Each Ts=5+6.82=11.82 ms
Tlt=0.096×(13+2×16)=4.32 ms
Ttx=0.096
Each Ts=5+6.82=11.82ms
Tlt=0.096×(13+2×15) ≈4.13 ms
Tlk=0.96+400+0.67+5≈407 ms
Note: addition waiting time default value =
400 ms
Ttx=0.096
Each Pcm=23+(8+16)×4=119 bytes
Tpc=Ttx×Pcm=0.096×119≈11.43 ms
Each Ts=5+11.43=16.43 ms
Tlt=0.096×(13+2×8) ≈2.79 ms
Ttx=0.096
Each Pcm=23+(32+64)×4=407 bytes
Tpc=Ttx×Pcm=0.096×407≈39.072 ms
Each Ts=5+39.072=44.072 ms
Tlt=0.096×(13+2×2) ≈1.632 ms
Ttx=0.096
Each Pcm=23+(1+1)×4=31 bytes
Tpc=Ttx×Pcm=0.096×31≈2.976 ms
Each Ts=1+2.976=3.976 ms
Tlt=0.096×(13+2×2) ≈1.632 ms
One transmission
cycle time (T)
T max.=Ts+Tlt+Tso
7.82×16+4.32+1
=130.44 ms
T max.=Ts+Tlt+Tso
11.82×16+4.32+5
=198.44 ms
T max.
=Ts+Tlt+Tso+Tlk
11.82×15+4.13+5+407
=593.43 ms
T max.=Ts+Tlt+Tso
16.438+2.79+5
=139.23 ms
T max.=Ts+Tlt+Tso
44.072×2+1.632+5
=94.776 ms
T max.=Ts+Tlt+Tso
3.976×2+1.632+1
=10.584 ms