Yaskawa 120 Series I/O Modules - Manual (Page 209)

5.3 I/O Allocation
5-11
5
3) I/O Reference Number Setting
The following table shows the I/O reference numbers and points that can be allo-
cated.
4) Parameter Setting
a) Service Scan: Normal/High-speed
Two types of service scans are available: normal and high-speed. A service scan
is recommended when using the high-speed segment function. The I/O module is
activated before the ladder decoding of the high-speed segments. The I/Os that are
processed in synchronization with the high-speed scan are called High-speed Seg-
ment I/Os. The MEMOSOFT is set by default to “NORMAL.”
b) Mode
The number of data input from the Register Input Module can be set.
Either 8CH or 16CH can be set.
The MEMOSOFT is set by default to “16CH.”
c) Cycle
The reading cycle of input data can be set.
Any of six cycles listed in the following table can be set according to the set mode.
The MEMOSOFT is set by default to 32/64 ms.
When a specified value is set for the cycle, the values of Timing T1 and T2 are set
according to the set cycle.
The following table shows the values of Select Timings when a specified value is
selected for the cycle.
Type of Input References for I/O Allocation Number of Registers
CPU10, CPU20, CPU21 CPU30, CPU35
Input registers 30001 to 300512 300001 to 300512 1 to 16 registers
Table 5.1 Cycles
Mode 8CH 16CH
Cycle 10 ms 20 ms
32 ms 64 ms
64 ms 128 ms
192 ms 384 ms
320 ms 640 ms
User set User set
Table 5.2 Select Timing When a Specified Value is Selected for Cycle
Mode Timing
8CH 16CH T1 T2
10 ms 20 ms 0.9 ms 0.4 ms
32 ms 64 ms 3.5 ms 0.5 ms
64 ms 128 ms 7.0 ms 1.0 ms
192 ms 384 ms 21.0 ms 3.0 ms
320 ms 640 ms 35.0 ms 5.0 ms