FP
Σ
User's Manual
8.7 PLC Link
239
LD Body
NOTE
If you are using FPWIN Pro Ver. 4.1 or higher and wish to use the addresses LD
or LE, please enter "L0D" or "L0E". The compiler misinterprets LD and LE as a
Load (LD) or Less Than or Equal To (LE) instruction and issues an error
message.
8.7.7 PLC Link Response Time
The maximum value for the transmission time (T) of one cycle can be calculated using the
following formula.
T max. = Ts1 + Ts2 + + Tsn + Tlt + Tso + Tlk
1
Ts (transmission time per station)
Ts = scan time + Tpc
Tpc = Ttx
×
Pcm
Ttx = 1/transmission speed
×
1000
×
11ms
≈
0.096ms at 115200bit/s
Pcm = 23 + (number of relay words + number of register words)
×
4
Tpc (PLC link sending time)
Ttx (sending time per byte)
Pcm (PLC link sending size)
2
Tlt (link table sending time)
Tlt = Ttx
×
Ltm
Ttx = 1/transmission speed
×
1000
×
11ms
≈
0.096ms at 115200bit/s
Ltm = 13 + 2
×
n
Ttx (sending time per byte)
Ltm (link table sending size)
n = number of stations being added
3
Tso (master station scan time)
The master station scan time should be confirmed using the programming tool.
4
Tlk (link addition processing time)
If no stations are being added, Tlk = 0.
Tlk = Tlc + Twt + Tls+ Tso
Summary of Contents for FPS Series
Page 7: ......
Page 17: ......
Page 18: ...Chapter 1 Safety Measures...
Page 21: ......
Page 22: ...Chapter 2 Overview...
Page 32: ...Chapter 3 CPU Types...
Page 47: ...CPU Types FP User s Manual 30 LD Body...
Page 51: ...CPU Types FP User s Manual 34 POU Header and LD Body...
Page 55: ...CPU Types FP User s Manual 38 LD Body...
Page 57: ......
Page 58: ...Chapter 4 Expansion...
Page 73: ......
Page 74: ...Chapter 5 I O Allocation...
Page 81: ......
Page 82: ...Chapter 6 Installation and Wiring...
Page 115: ......
Page 116: ...Chapter 7 High Speed Counter and Pulse Output...
Page 169: ......
Page 170: ...Chapter 8 Communication...
Page 227: ...Communication FP User s Manual 210 LD Body ST Body...
Page 233: ...Communication FP User s Manual 216 POU Header LD Body...
Page 236: ...FP User s Manual 8 6 Program Controlled Communication 219 POU Header LD Body 1 2...
Page 237: ...Communication FP User s Manual 220 2 2 ST Body...
Page 266: ...Chapter 9 Security Functions...
Page 273: ......
Page 274: ...Chapter 10 Other Functions...
Page 277: ......
Page 278: ...Chapter 11 Troubleshooting...
Page 289: ......
Page 290: ...Chapter 12 Appendix...