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8 PROGRAMMING
8 PROGRAMMING
8
8 - 1
Using a sample system configuration shown below, this chapter explains details of the
QD62 (E/D) programs in the following two scenarios: when GX Configurator-CT is
used and when GX Configurator-CT is not used.
System configuration used in the program explanation
(1) System configuration
(2) Program conditions
This program uses QD62 to perform counting with the conditions listed below.
Set the pulse input mode, counting speed setting and ring/linear counter
selection with the GX Developer intelligent function module switch.
• Pulse input mode
• Counting speed setting
• Applicable channel
(a) Contents of initial setting
Preset value
Coincidence output point No. 1
Ring counter minimum value
Ring counter maximum value
Sampling time setting
Periodic pulse time setting
1 Set only when a ring counter is used
2 Set only when the sampling counter function is used
3 Set only when the periodic pulse counter function is used
POINT
Programs that were used in earlier products such as A1SD62 (E/D/D-S1) cannot
be used because the I/O signals and the buffer memory configuration of these
products differ from those of QD62 (E/D). The conventional dedicated instructions
cannot be used.
: 2 phase multiple of 1
: 200 kPPS
: Channel 1
Item
1
1
2
3
MELSEC-Q
Setting value
2500
1000
–5000
5000
10000 ms
5000 ms
8 - 1
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