Analog Input And Output Conversion Cycle Time - Panasonic FP2 -C1A Manual

FP2 Analog Unit
6.3

Analog Input and Output Conversion Cycle Time

6.3.1 Analog Input Conversion Cycle Time
When setting the range for each analog input channel, the conversion cycle time of the
channel you want can be calculated by the formula below.
Conversion cycle time = (0.5 ms × n1 + 2 ms × n2 + 3 ms × n3) × n4
n1: Number of input channels used (number of input channels set for execution of con-
version processing)
n2: Number of gain types among all the used input channels
When used with different input ranges, the processing will differ due to the differ-
ence in the signal processing gain at each input range. Therefore, clarify the gain
types among the used input channels based on the table below.
n3: Number of temperature input channels among all the used input channels
n4: Conversion processing coefficient
The coefficient that corresponds to the input range of the channel for which you
want to ascertain the conversion cycle time (refer to table below).
Input range
±10V
1 to 5V
±20mA
4 to 20mA
±100mV
Thermocouple (Pt100)
Thermocouple (Pt1000)
Example of conversion cycle time calculation 1
Ch0 thermocouple k
Ch1 thermocouple J
Ch2 0V
±1
Ch3 Pt1000
Ch4 thermocouple J
Ch5 100mV
±
Ch6 thermocouple J
Ch7 Pt100
Ch2 ( 10V) conversion cycle time = (0.5
±
Ch0 (thermocouple K) conversion cycle time = (0.5
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Analog I/O Conversion Characteristics and Conversion Cycle Time
6.3
Gain
1 time
100 times
150 times
50 times
Number of input channels used: n1 = 8
Number of gain types: n2 = 4
Number of temperature input channels: n3 = 6
×
Analog Input and Output Conversion Cycle Time
Conversion processing coefficient
n4 = 1
n4 = 30
8 + 2 4 + 3 6)
× × ×
8 + 2 4 + 3
× ×
1 = 30ms
6) 30 = 900ms
× ×
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