Panasonic FP3 Technical Manual page 135

J Maximum input response time (Tires)
The maximum input response time (Tires) is the maximum time it takes for an input signal received by a slave station
to reach the FP3/FP10S CPU via the FP3 transmitter master unit.
Tires is calculated by the following formula.
Tires (ms) = Ttr × 2 + Tc + Tidly
Ttr = Scan time of the MEWNET-TR system
This is the time required for the FP3 transmitter master unit to receive input information from each slave station.
Please see next page.
Tc = Scan time of the CPU
This is the time required for the FP3/FP10S CPU to perform an I/O update, program execution or tool services.
The value varies depending on the program and operating conditions.
The current, minimum and maximum values of the scan time are stored in special data registers:
- DT9022, DT9023, and DT9024 of the FP3 CPU
- DT90022, DT90023, and DT90024 of the FP10S CPU
Special data registers
Address
DT9022, DT90022 Scan time register (current value)
DT9023, DT90023 Scan time register (minimum value) Minimum scan time (ms) = data × 0.1
DT9024, DT90024 Scan time register (maximum value) Maximum scan time (ms) = data × 0.1
Tidly = Input response time of the input type slave station
Slave station
FP I/O transmitter unit
Expansion FP I/O terminal unit
J Maximum output response time (Tores)
The maximum output response time (Tores) is the maximum time it takes for a signal to be transmitted from the
FP3/FP10S CPU to a slave station and an output to be generated from the corresponding terminal.
Tores is calculated by the following formula.
Tores (ms) = Ttr × 2 + Todly
Ttr =
Scan time of the MEWNET-TR system
This is the time required for the FP3 transmitter master unit to transmit output information to each slave station.
Please see next page.
Todly = Output response time of the output type slave station
Slave station
FP I/O transmitter unit
Expansion FP I/O terminal unit
Name
Current scan time (ms) = data × 0.1
OFF ↔ ON: 1 ms or less
OFF ↔ ON: 2 ms or less
OFF ↔ ON: 1 ms or less
OFF ↔ ON: 1 ms or less
8-5. Transfer Time
Scan time calculation formula
Response time
Response time
129