Fuji Electric micrex-sx NP1F-MP1, User Manual

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7-40
7-5 External Input Pulse Functions
7-5-2 Detection time of this module
• This module measures the time until it starts constant-period processing since transmission has ended on the SX
bus side (on the module side, since receiving of data from the CPU module has ended).
Completion of transmission from SX bus
t
11 t
01
t
02
T
Constant-period timer of this module
P
1
P
0
t
01
to t
11
: Detection time
• Detection time is updated whenever constant-period operation is performed by this module.
• Detection time is output in units of 1
µ
s.
The frequency of the external pulse is calculated from Takt T and the detection time of this module:
f = x 1000 x 1000 [Hz]
P
1
- P
0
(T - t
02
+ t
11
)
µ
s is converted into s.