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4 AUXILIARY AND APPLIED FUNCTIONS
4.2 External Input Signal
■High-speed input request signal accuracy
When bit device or amplifier input is set, set the accuracy of high-speed input request signals.
*1 When using an actual device with the inter-module synchronization setting, the inter-module synchronization cycle is used.
*2 When not set, a moderate error (error code: 30D3H) occurs.
*3 Detection accuracy of the high-accuracy setting of the bit device.
• General
The detection accuracy is based on the fixed-cycle processing of the Motion CPU. General detection accuracy is used even
when the input module setting is "Enable synchronization between modules".
• High-accuracy
When the input module setting is "inter-module synchronization valid", by setting the high-speed input request signal
accuracy to "High-accuracy", high-speed input request signals can be controlled with high accuracy. If this signal is
specified for a signal that is not compatible with high-accuracy input, a moderate error (error code: 30D3H) occurs.
For sensing module input, the high-speed input request signal accuracy is set in the servo parameters. Refer
to the following for details of servo parameters.
Sensing Module Instruction Manual
• When the high-speed input request signal accuracy of the sensing module is set to general, set "0: Digital
input" in the servo parameter "DI setting 2 (function selection)".
• When setting the high-speed input request signal accuracy of the sensing module to high-accuracy, set "1:
Timing-latch input" in the servo parameter "DI setting 2 (function selection)". By setting a sensing module
DI signal that supports the timing-latch input function, control accuracy using the high-speed input request
signal can be changed to high-accuracy. Refer to timing-latch input function for details of timing-latch input
function. (Page 240 Timing-latch input function)
The detection accuracy of sensing module input is as follows.
High-speed input request
signal accuracy
Signal type Setting required on the module
side
Detection accuracy[s]
General Bit device None 222
*1
Amplifier input (DI1 to DI3) None • Operation cycle 1.777[ms] or less:
Operation cycle
• Operation cycle 3.555[ms] or more:
3555
High-accuracy Bit device • Enable the inter-module
synchronization function.
*2
• Set the input response time.
*3
Input response time [ms] Detection accuracy
Theoretical value [s] Measured value [s]
0.10 4.9 7
0.20 9.9 12
0.40 19.8 22
0.60 25.0 27
1.00 39.5 41
5.00 158 160
10.00 316 318
20.00 630 632
70.00 2500 2502
High-speed input request signal accuracy Detection accuracy [µs]
General • Operation cycle 0.444[ms] or less: Operation cycle
• Operation cycle 0.888[ms] or more: 888
High-accuracy 1
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